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matemáticas</category><category>google</category><title>Prof. Edigley Alexandre</title><description>Matematicando e informatizando...</description><link>http://www.prof-edigleyalexandre.com/</link><managingEditor>noreply@blogger.com (Edigley Alexandre)</managingEditor><generator>Blogger</generator><openSearch:totalResults>418</openSearch:totalResults><openSearch:startIndex>1</openSearch:startIndex><openSearch:itemsPerPage>25</openSearch:itemsPerPage><atom10:link xmlns:atom10="http://www.w3.org/2005/Atom" rel="self" type="application/rss+xml" href="http://feeds.feedburner.com/edigleyalexandre" /><feedburner:info uri="edigleyalexandre" /><atom10:link xmlns:atom10="http://www.w3.org/2005/Atom" rel="hub" href="http://pubsubhubbub.appspot.com/" /><geo:lat>-5.206412</geo:lat><geo:long>-37.357703</geo:long><image><link>http://prof-edigleyalexandre.com/</link><url>http://i679.photobucket.com/albums/vv153/edigleyg3/Icones/BLOG2012/banner_blog252x52.png</url></image><xhtml:meta 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Live.com</feedburner:feedFlare><feedburner:browserFriendly>Conteúdo publicado via FeedBurner</feedburner:browserFriendly><item><guid isPermaLink="false">tag:blogger.com,1999:blog-125900602153146940.post-4276335224505093360</guid><pubDate>Mon, 13 Feb 2012 21:14:00 +0000</pubDate><atom:updated>2012-02-13T19:14:05.023-02:00</atom:updated><category domain="http://www.blogger.com/atom/ns#">Desafios matemáticos</category><title>Desafios matemáticos #16</title><description>&lt;p&gt;&lt;a href="http://feedads.g.doubleclick.net/~a/h7ysjXwYSq8Z7KCBN8iyH9ssvGE/0/da"&gt;&lt;img src="http://feedads.g.doubleclick.net/~a/h7ysjXwYSq8Z7KCBN8iyH9ssvGE/0/di" border="0" ismap="true"&gt;&lt;/img&gt;&lt;/a&gt;&lt;br/&gt;
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A figura abaixo mostra um triângulo equilátero de cor branca inscrito dentro de outro triângulo equilátero de cor azul. O lado do triângulo maior mede 10 metros. Deseja-se obter a menor área do triângulo branco. &lt;b&gt;Qual seria a distância &lt;i&gt;x&lt;/i&gt; neste caso?&lt;/b&gt;&lt;/div&gt;
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&lt;a href="http://3.bp.blogspot.com/-OQTQr0PeFRg/Tzl69j6GkbI/AAAAAAAACtg/oSnz8A91OiE/s1600/desafio_matematico_16.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"&gt;&lt;img border="0" height="298" src="http://3.bp.blogspot.com/-OQTQr0PeFRg/Tzl69j6GkbI/AAAAAAAACtg/oSnz8A91OiE/s400/desafio_matematico_16.png" width="400" /&gt;&lt;/a&gt;&lt;/div&gt;
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Deixe sua resposta &lt;a href="http://edigleyalexandre.wufoo.com/forms/envie-sua-resposta/" target="_blank"&gt;nesse formulário&lt;/a&gt; ou nos comentários desse post. Tweet ou curta esse post &amp;nbsp;e espalhe para seus amigos encontrarem uma resposta. Tente justificar de forma bem clara.&lt;/div&gt;
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Aos meus alunos, está valendo uma pontuação extra para quem participar.&lt;/div&gt;
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Se alguém se interessar posso disponibilizar o protocolo de construção dessa figura para download.&lt;/div&gt;
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Bons estudos!&lt;/div&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/edigleyalexandre/~4/RotgulFlp6g" height="1" width="1"/&gt;</description><link>http://feedproxy.google.com/~r/edigleyalexandre/~3/RotgulFlp6g/desafios-matematicos-16.html</link><author>noreply@blogger.com (Edigley Alexandre)</author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://3.bp.blogspot.com/-OQTQr0PeFRg/Tzl69j6GkbI/AAAAAAAACtg/oSnz8A91OiE/s72-c/desafio_matematico_16.png" height="72" width="72" /><thr:total>0</thr:total><creativeCommons:license>http://creativecommons.org/licenses/by-nc-sa/3.0/</creativeCommons:license><feedburner:origLink>http://www.prof-edigleyalexandre.com/2012/02/desafios-matematicos-16.html</feedburner:origLink></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-125900602153146940.post-8565320301060426095</guid><pubDate>Sat, 11 Feb 2012 18:38:00 +0000</pubDate><atom:updated>2012-02-11T16:38:38.699-02:00</atom:updated><category domain="http://www.blogger.com/atom/ns#">imagens</category><category domain="http://www.blogger.com/atom/ns#">Curiosidades matemáticas</category><category domain="http://www.blogger.com/atom/ns#">google</category><category domain="http://www.blogger.com/atom/ns#">tecnologia</category><title>Google revela a equação para o amor</title><description>&lt;p&gt;&lt;a href="http://feedads.g.doubleclick.net/~a/xMtsOQaf8VJM7dPz6K-PQyywR_8/0/da"&gt;&lt;img src="http://feedads.g.doubleclick.net/~a/xMtsOQaf8VJM7dPz6K-PQyywR_8/0/di" border="0" ismap="true"&gt;&lt;/img&gt;&lt;/a&gt;&lt;br/&gt;
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Em dezembro do ano passado, escrevi um post mostrando o novo serviço da Google, que é realizado na sua caixa de pesquisas. A nova brincadeirinha é de esboçar gráficos diretamente no buscador, inserindo quaisquer tipos de funções matemáticas. Por exemplo, ao pesquisar por uma&amp;nbsp;equação do 2º grau do tipo:&amp;nbsp;&lt;b&gt;y = x^2 + 2*x +1 &lt;/b&gt;(x²+2x+1), encontraremos o seguinte gráfico:&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
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&lt;table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"&gt;&lt;tbody&gt;
&lt;tr&gt;&lt;td style="text-align: center;"&gt;&lt;a href="http://1.bp.blogspot.com/-J-Y8WqnR6Qo/Tt7Ksd0kJRI/AAAAAAAACLQ/xiedEu9Yqwg/s640/gr%25C3%25A1fico_02.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"&gt;&lt;img border="0" height="324" src="http://1.bp.blogspot.com/-J-Y8WqnR6Qo/Tt7Ksd0kJRI/AAAAAAAACLQ/xiedEu9Yqwg/s640/gr%25C3%25A1fico_02.png" width="640" /&gt;&lt;/a&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class="tr-caption" style="text-align: center;"&gt;Parábola de x²+2x+1&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
Leia esses artigos&lt;br /&gt;
&lt;br /&gt;
&lt;ul&gt;
&lt;li&gt;&lt;a href="http://www.prof-edigleyalexandre.com/2011/12/construa-graficos-de-funcoes.html" target="_blank"&gt;Construa gráficos de funções matemáticas usando o buscador da Google&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href="http://www.prof-edigleyalexandre.com/2010/12/construindo-graficos-de-equacoes-via.html" target="_blank"&gt;Construindo gráficos de funções matemáticas com o Wolfram|Alpha&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href="http://www.prof-edigleyalexandre.com/2010/07/calculos-matematicos-usando-o-buscador.html" target="_blank"&gt;Cálculos matemáticos usando o buscador da Google&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;div&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Hoje o Google mostrou uma equação mais elaborada, da qual os apaixonados devem gostar muito, principalmente os nerds rsrs! Essa equação já em bem comum em outros serviços online como o Wolfram|Alpha.&lt;/div&gt;
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&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
A equação é a seguinte.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;textarea style="background: #f5f5f5; border: 1px solid #f5f5f5; color: #444444; height: 40px; overflow: hidden; width: 640px;"&gt;sqrt(cos(x))*cos(300x)+sqrt(abs(x))-0.7)*(4-x*x)^0.01, sqrt(6-x^2), -sqrt(6-x^2) from -4.5 to 4.5&lt;/textarea&gt;&lt;br /&gt;
&lt;br /&gt;
E ela gerará este lindo gráfico.&lt;br /&gt;
&lt;br /&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://2.bp.blogspot.com/-4XXOwA-JjDM/TzayJ66TyQI/AAAAAAAACtQ/JWBYoE1m-8Q/s1600/equa%C3%A7%C3%A3o+do+amor+do+google.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"&gt;&lt;img border="0" height="362" src="http://2.bp.blogspot.com/-4XXOwA-JjDM/TzayJ66TyQI/AAAAAAAACtQ/JWBYoE1m-8Q/s640/equa%C3%A7%C3%A3o+do+amor+do+google.png" width="640" /&gt;&lt;/a&gt;&lt;/div&gt;
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&lt;blockquote class="tr_bq" style="text-align: justify;"&gt;
A equação do Google ilustra como a Matemática e a computação estão se unindo cada vez mais para se conectar com as preocupações das pessoas em todos os dias a vida.&amp;nbsp;A fórmula não é projetada para revelar a área dentro de um círculo ou um triângulo, mas um espaço abstrato - você poderia chamá-lo de os limites do coração humano. [&lt;a href="http://www.foxnews.com/scitech/2012/02/11/google-reveals-equation-for-love/" target="_blank"&gt;&lt;b&gt;foxnews.com&lt;/b&gt;&lt;/a&gt;]&lt;/blockquote&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/edigleyalexandre/~4/Sp0KFTwGc0s" height="1" width="1"/&gt;</description><link>http://feedproxy.google.com/~r/edigleyalexandre/~3/Sp0KFTwGc0s/google-revela-equacao-para-o-amor.html</link><author>noreply@blogger.com (Edigley Alexandre)</author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://1.bp.blogspot.com/-J-Y8WqnR6Qo/Tt7Ksd0kJRI/AAAAAAAACLQ/xiedEu9Yqwg/s72-c/gr%25C3%25A1fico_02.png" height="72" width="72" /><thr:total>0</thr:total><creativeCommons:license>http://creativecommons.org/licenses/by-nc-sa/3.0/</creativeCommons:license><feedburner:origLink>http://www.prof-edigleyalexandre.com/2012/02/google-revela-equacao-para-o-amor.html</feedburner:origLink></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-125900602153146940.post-4148270053988775398</guid><pubDate>Fri, 10 Feb 2012 17:13:00 +0000</pubDate><atom:updated>2012-02-10T15:13:15.578-02:00</atom:updated><category domain="http://www.blogger.com/atom/ns#">informática</category><category domain="http://www.blogger.com/atom/ns#">matemática</category><category domain="http://www.blogger.com/atom/ns#">dicas</category><category domain="http://www.blogger.com/atom/ns#">tecnologia</category><title>Aprenda Matemática Financeira, suas fórmulas e cálculos na HP12C</title><description>&lt;p&gt;&lt;a href="http://feedads.g.doubleclick.net/~a/JVXeXFGawpQD2nxWO6-mlPkCpwc/0/da"&gt;&lt;img src="http://feedads.g.doubleclick.net/~a/JVXeXFGawpQD2nxWO6-mlPkCpwc/0/di" border="0" ismap="true"&gt;&lt;/img&gt;&lt;/a&gt;&lt;br/&gt;
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&lt;div style="text-align: justify;"&gt;
Na metade do ano passado, um amigo me procurou, com sua HP12C em mãos, para que eu o ajudasse a manuseá-la, para se sair bem nas aulas de Matemática Financeira na Pós-Graduação. Infelizmente não pude ajudá-lo por falta de tempo naquele momento. Foi uma&amp;nbsp;pena, pois não conhecida naquele instante um curso online que pudesse passar para ele.&lt;/div&gt;
&lt;br /&gt;
&lt;div style="text-align: center;"&gt;
&lt;a href="http://www.cursos24horas.com.br/parceiro.asp?cod=promocao51722" target="_blank"&gt;&lt;img alt="Cursos 24 Horas - Cursos Online com Certificado" height="250" src="http://www.cursos24h.net.br/banners/gif5/580x250.gif" style="border: none;" width="580" /&gt;&lt;/a&gt;&lt;br /&gt;
&lt;a href="http://www.cursos24horas.com.br/parceiro.asp?cod=promocao51722" style="color: #028acc; font-family: Verdana, Geneva, sans-serif; font-size: 10px; text-decoration: none;" target="_blank"&gt;Cursos On-line 24 Horas&lt;/a&gt;&lt;span style="color: #028acc; font-size: 10px;"&gt; - &lt;/span&gt;&lt;a href="http://www.cursos24horas.com.br/parceiro.asp?cod=promocao51722" style="color: #028acc; font-family: Verdana, Geneva, sans-serif; font-size: 10px; text-decoration: none;" target="_blank"&gt;Cursos 100% Online com Certificado&lt;/a&gt;&lt;br /&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Caso você tenha passado por alguma situação semelhante, saiba que existe muitos serviços na internet que oferecem cursos online de excelente qualidade. Um deles é o &lt;b&gt;Cursos 24 Horas&lt;/b&gt;. Existem diversos cursos em quase todas as áreas.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
O curso que destaco aqui é&amp;nbsp;o&amp;nbsp;&lt;b&gt;Curso de Matemática Financeira com a HP 12C&lt;/b&gt;.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;b&gt;INFORMAÇÕES E CARACTERÍSTICAS SOBRE CURSO&lt;/b&gt;&lt;br /&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;ul&gt;
&lt;li&gt;O conteúdo ensinado no curso é útil para contabilidade caseira, empresarial ou até mesmo se for fazer um outro curso que utilize a HP12C;&lt;/li&gt;
&lt;li&gt;Nenhum conhecimento prévio com a calculadora é exigido. Ao final do curso, você estará apto(a) a utilizar a HP12C;&lt;/li&gt;
&lt;li&gt;Você receberá acesso gratuitamente a um simulador da HP12C em seu computador, permitindo que você faça todos os cálculos que faria na própria HP12C;&lt;/li&gt;
&lt;li&gt;O Curso de Matemática Financeira com HP12C é totalmente online, com apostila, programa de simulação e apoio de um professor para tirar quaisquer dúvidas;&lt;/li&gt;
&lt;li&gt;O curso custa apenas R$ 20,00 sem mensalidade;
&lt;/li&gt;
&lt;li&gt;15 horas de duração e o início é imediato.&lt;/li&gt;
&lt;/ul&gt;
&lt;div&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div&gt;
Se estiver interessado basta clicar na imagem abaixo para obter mais informações.&lt;/div&gt;
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&lt;br /&gt;&lt;/div&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/edigleyalexandre/~4/0rlPZ64UH1I" height="1" width="1"/&gt;</description><link>http://feedproxy.google.com/~r/edigleyalexandre/~3/0rlPZ64UH1I/aprenda-matematica-financeira-suas.html</link><author>noreply@blogger.com (Edigley Alexandre)</author><thr:total>0</thr:total><creativeCommons:license>http://creativecommons.org/licenses/by-nc-sa/3.0/</creativeCommons:license><feedburner:origLink>http://www.prof-edigleyalexandre.com/2012/02/aprenda-matematica-financeira-suas.html</feedburner:origLink></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-125900602153146940.post-6993374861672153773</guid><pubDate>Thu, 09 Feb 2012 11:00:00 +0000</pubDate><atom:updated>2012-02-09T09:00:06.356-02:00</atom:updated><category domain="http://www.blogger.com/atom/ns#">Software Livre</category><category domain="http://www.blogger.com/atom/ns#">matemática</category><category domain="http://www.blogger.com/atom/ns#">Download</category><category domain="http://www.blogger.com/atom/ns#">linux</category><category domain="http://www.blogger.com/atom/ns#">windows</category><category domain="http://www.blogger.com/atom/ns#">ubuntu</category><title>GraphMonkey: calculadora gráfica para o Ubuntu</title><description>&lt;p&gt;&lt;a href="http://feedads.g.doubleclick.net/~a/9agrCl7mJJ-wRmd24XQVO5EPqvI/0/da"&gt;&lt;img src="http://feedads.g.doubleclick.net/~a/9agrCl7mJJ-wRmd24XQVO5EPqvI/0/di" border="0" ismap="true"&gt;&lt;/img&gt;&lt;/a&gt;&lt;br/&gt;
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&lt;/div&gt;
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&lt;div style="text-align: justify;"&gt;
No sistema operacional Linux Ubuntu, existem diversas ferramentas com a função de desenhar gráficos matemáticos com precisão. Já mostrei aqui no blog o &lt;a href="http://www.prof-edigleyalexandre.com/search/label/Kmplot" target="_blank"&gt;KmPlot&lt;/a&gt;, que é um excelente software que gera gráficos a partir de equações inseridas.&lt;br /&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://3.bp.blogspot.com/-9Gq5XdQxGv0/TzL1RbrsQiI/AAAAAAAACtI/34UmDRS3RSY/s1600/Captura+de+tela_Graphmonkey.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"&gt;&lt;img border="0" height="250" src="http://3.bp.blogspot.com/-9Gq5XdQxGv0/TzL1RbrsQiI/AAAAAAAACtI/34UmDRS3RSY/s400/Captura+de+tela_Graphmonkey.png" width="400" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;br /&gt;
Outras formas de construir gráficos de equações:&lt;br /&gt;
&lt;div style="text-align: justify;"&gt;
&lt;ul&gt;
&lt;li&gt;&lt;a href="http://www.prof-edigleyalexandre.com/2011/12/construa-graficos-de-funcoes.html" target="_blank"&gt;Construa gráficos de funções matemáticas usando o buscador da Google&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href="http://www.prof-edigleyalexandre.com/2010/12/construindo-graficos-de-equacoes-via.html" target="_blank"&gt;Construindo gráficos de funções matemáticas com o Wolfram|Alpha&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href="http://www.prof-edigleyalexandre.com/2012/02/desenhe-graficos-de-equacoes-com-esta.html" target="_blank"&gt;Desenhe gráficos de equações com esta extensão para o Google Chrome&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Esta dica agora é sobre o &lt;b&gt;GraphMonkey&lt;/b&gt;. Uma calculadora gráfica matemática bem simples e muito fácil de ser utilizada. Insira uma, duas ou três equações e aperte o botão &lt;i&gt;&lt;b&gt;Trace&lt;/b&gt;&lt;/i&gt;, uma janela abrirá com os gráficos com cores diferentes. Diferente do Kmplot, o GraphMonkey não é muito personalizável, mas ainda sim uma ótima ferramenta.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;b&gt;CARACTERÍSTICAS&lt;/b&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;ul&gt;
&lt;li&gt;Software é escrito em C# com o GTK#;&lt;/li&gt;
&lt;li&gt;Multi-plataforma: ele funciona em GNU/Linux e Windows;&lt;/li&gt;
&lt;li&gt;Idiomas: Inglês e Francês;&lt;/li&gt;
&lt;li&gt;Interface do usuário Gnome;&lt;/li&gt;
&lt;li&gt;Está sob a licença GPL;&lt;/li&gt;
&lt;li&gt;43,8 KB para baixar, 160 KB quando instalado (Ubuntu)&lt;/li&gt;
&lt;/ul&gt;
&lt;div&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div&gt;
&lt;b&gt;INSTALAÇÃO/DOWNLOAD&lt;/b&gt;&lt;br /&gt;
&lt;br /&gt;
LINUX&lt;br /&gt;
Via terminal&lt;br /&gt;
&lt;textarea style="background: #f5f5f5; border: 1px solid #f5f5f5; color: #444444; height: 18px; overflow: hidden; width: 640px;"&gt;$ sudo apt-get install graphmonkey &lt;/textarea&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;
Ou&amp;nbsp;&lt;a href="apt://graphmonkey" target="_blank"&gt;Clique aqui&lt;/a&gt; e seja direcionado para a Central de Programas do Ubuntu.&lt;br /&gt;
&lt;br /&gt;
WINDOWS&lt;br /&gt;
Escolha um dos servidores abaixo para fazer download.&lt;br /&gt;
&lt;div style="text-align: center;"&gt;
&lt;a href="http://sourceforge.net/projects/graphmonkey/files/latest/download" imageanchor="1" style="margin-left: 1em; margin-right: 1em;" target="_blank"&gt;&lt;img border="0" src="http://1.bp.blogspot.com/-DwdWV-zct_g/TzK6ZiWtCxI/AAAAAAAACtA/Ut5p4DiqRyg/s1600/sourceforge.png" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="text-align: center;"&gt;
&lt;b&gt;Servidor oficial&lt;/b&gt;&lt;/div&gt;
&lt;br /&gt;
&lt;center&gt;&lt;table border="0" cellpadding="2" cellspacing="2" style="text-align: left; width: 640px;"&gt;&lt;tbody&gt;
&lt;tr&gt; &lt;td style="font-weight: bold; text-align: center; vertical-align: top; width: 108px;"&gt;&lt;a href="http://ubuntuone.com/1helXN0Ayoe4bkzMpCwNZA" target="_blank"&gt;&lt;img alt="Ubuntu one" src="http://i679.photobucket.com/albums/vv153/edigleyg3/Icones/BLOG2012/ubuntu_one.png" style="border: 0px solid; height: 32px; width: 31px;" title="Ubuntu one" /&gt;&lt;/a&gt;&lt;br /&gt;
Ubuntu One&lt;/td&gt;&lt;td style="font-weight: bold; text-align: center; vertical-align: top; width: 108px;"&gt;&lt;a href="http://www.4shared.com/archive/k_NVNblj/GraphMonkey-17tar.html" target="_blank"&gt;&lt;img alt="4shared" src="http://i679.photobucket.com/albums/vv153/edigleyg3/Icones/BLOG2012/4shared.png" style="border: 0px solid; height: 32px; width: 34px;" title="4shared" /&gt;&lt;/a&gt;&lt;br /&gt;
4shared&lt;br /&gt;
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GoogleDocs&lt;br /&gt;
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Durante a semana pedagógica na escola no início de fevereiro, combinei por várias com um colega de trabalho, professor de Literatura, de passar algumas palavras para que ele pudesse escrever um cordel tendo como tema a Matemática.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"&gt;&lt;tbody&gt;
&lt;tr&gt;&lt;td style="text-align: center;"&gt;&lt;a href="http://pt.wikipedia.org/wiki/Literatura_de_cordel" imageanchor="1" style="margin-left: auto; margin-right: auto;" target="_blank"&gt;&lt;img border="0" src="http://1.bp.blogspot.com/-q7xuykNz6mo/TzHnLA905DI/AAAAAAAACs4/MEE9oU5_228/s1600/A+Matem%C3%A1tica+em+cordel.jpg" /&gt;&lt;/a&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class="tr-caption" style="text-align: center;"&gt;&lt;a href="http://pt.wikipedia.org/wiki/Literatura_de_cordel" target="_blank"&gt;O que é Literatura de Cordel?&lt;/a&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Mas como de costume, sempre pesquiso antes o que já tem publicado na web e para minha feliz surpresa encontrei alguns excelentes textos. No blog &lt;b&gt;Matemática em Cordel&lt;/b&gt;, são os próprios alunos que, em grupos, escrevem literaturas de cordel. Quanto ao texto do colega professor ainda está de pé, ele me prometeu rsrs!&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Foi difícil escolher um, dentre muitos no blog citado acima.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
--&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;b&gt;Cordel matemático&lt;/b&gt;&lt;/div&gt;
&lt;br /&gt;
Os conteúdos matemáticos&lt;br /&gt;
Estão presentes em todos os lados&lt;br /&gt;
Da divisão à adição&lt;br /&gt;
Para resolver a operação&lt;br /&gt;
&lt;br /&gt;
Na I unidade&lt;br /&gt;
Demos o número racional&lt;br /&gt;
Com a sua forma decimal&lt;br /&gt;
Junto com a introdução&lt;br /&gt;
Ao cálculo algébrico&lt;br /&gt;
Que para a II unidade&lt;br /&gt;
Ficou todo seu resto&lt;br /&gt;
&lt;br /&gt;
Na II unidade fizemos um trabalho&lt;br /&gt;
Envolvendo os matemáticos&lt;br /&gt;
Aristóteles e Arquimedes&lt;br /&gt;
Euclides e Viète&lt;br /&gt;
O Euller também participou&lt;br /&gt;
E a nossa nota aumentou&lt;br /&gt;
&lt;br /&gt;
Também temos monômios&lt;br /&gt;
Com a sua forma literal&lt;br /&gt;
Que dividindo ou multiplicando&lt;br /&gt;
Encontramos o seu grau&lt;br /&gt;
&lt;br /&gt;
Em uma questão da potenciação&lt;br /&gt;
Exige muita atenção&lt;br /&gt;
Para responder&lt;br /&gt;
Tem que saber&lt;br /&gt;
A divisão e também a multiplicação&lt;br /&gt;
Para achar a solução&lt;br /&gt;
&lt;br /&gt;
Já na III unidade&lt;br /&gt;
Vamos descobrir a fatoração&lt;br /&gt;
Que vai precisar de dedicação&lt;br /&gt;
Para poder tirar um 10&lt;br /&gt;
E não ir para a recuperação&lt;br /&gt;
&lt;br /&gt;
Na multiplicação e divisão de polinômios&lt;br /&gt;
É preciso estar concetrado&lt;br /&gt;
Pois se um termo faltar&lt;br /&gt;
A questão não mais valerá&lt;br /&gt;
E todo o seu trabalho&lt;br /&gt;
Irá por água abaixo&lt;br /&gt;
&lt;br /&gt;
Por isso que digo&lt;br /&gt;
Que a matemática é um espaço&lt;br /&gt;
Onde achamos os resultados&lt;br /&gt;
Para o que é desejado&lt;br /&gt;
&lt;br /&gt;
Durante o ano&lt;br /&gt;
Com Letícia aprendemos&lt;br /&gt;
E os seus ensinamentos&lt;br /&gt;
Nunca mais esqueceremos&lt;br /&gt;
&lt;br /&gt;
E por aqui vai terminando nosso trabalho&lt;br /&gt;
Que foi sobre um cordel matemático&lt;br /&gt;
Que foi feito com muita dedicação&lt;br /&gt;
E obrigado pela a sua atenção&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
Leia vários&amp;nbsp;cordéis&amp;nbsp;em&amp;nbsp;&lt;a href="http://cordelnamatematica.blogspot.com/2011/07/cordel-matematico_22.html" target="_blank"&gt;&lt;b&gt;cordelnamatematica.blogspot.com&lt;/b&gt;&lt;/a&gt;.&lt;br /&gt;
&lt;br /&gt;
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Sempre vasculho a internet em busca de alguma ferramenta que seja útil e fácil de ser utilizada. Encontrei o &lt;b&gt;Graphing Calculator&lt;/b&gt;. Essa extensão é uma das mais simples que já instalei, testei e que vou usá-la em minhas atividades escolares.&amp;nbsp;&lt;/div&gt;
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&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Insira facilmente a equação desejada usando a barra deslizante que aparece na parte inferior esquerda do&amp;nbsp;&lt;b&gt;Graphing Calculator&lt;/b&gt;. É possível também dar uma cor diferente para cada gráfico gerado pelas equações inseridas.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;span style="text-align: justify;"&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;span style="text-align: justify;"&gt;Veja um exemplo de como usar essa extensão, salvando o gráfico gerado para ser usado nas suas atividades.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;span style="text-align: justify;"&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;span style="text-align: justify;"&gt;Insira equações&lt;/span&gt;&lt;/div&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://1.bp.blogspot.com/-Aogz22PeQnA/TzFShF8fc3I/AAAAAAAACsg/4mBuP_2P4z0/s1600/Graphing_calculator01.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"&gt;&lt;img border="0" height="332" src="http://1.bp.blogspot.com/-Aogz22PeQnA/TzFShF8fc3I/AAAAAAAACsg/4mBuP_2P4z0/s640/Graphing_calculator01.png" width="640" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Dê cores diferentes para suas equações se desejar&lt;/div&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://2.bp.blogspot.com/-FZ_v14liS9Q/TzFSvwfCWKI/AAAAAAAACso/-AQKQiOxuJw/s1600/Graphing_calculator02.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"&gt;&lt;img border="0" height="334" src="http://2.bp.blogspot.com/-FZ_v14liS9Q/TzFSvwfCWKI/AAAAAAAACso/-AQKQiOxuJw/s640/Graphing_calculator02.png" width="640" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;span style="text-align: justify;"&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;span style="text-align: justify;"&gt;Clique no botão &lt;b&gt;Save &amp;amp; Share&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://2.bp.blogspot.com/-8I37YlXcyp4/TzFTUGqWqhI/AAAAAAAACsw/TI3isLR9NME/s1600/Graphing_calculator03.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"&gt;&lt;img border="0" height="334" src="http://2.bp.blogspot.com/-8I37YlXcyp4/TzFTUGqWqhI/AAAAAAAACsw/TI3isLR9NME/s640/Graphing_calculator03.png" width="640" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;span style="text-align: justify;"&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Após clicar em &lt;b&gt;Save &amp;amp; Share&lt;/b&gt;, uma janelinha abrirá dando a opção de curtir/enviar seu projeto de gráficos para o Facebook ou enviar para o Twitter.&lt;/div&gt;
&lt;div&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
A opção de salvar o gráfico em imagem para seu computador está no link abaixo que diz:&lt;/div&gt;
&lt;div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;a href="https://www.desmos.com/calculator/ifmb4yqbdm" target="_blank"&gt;Save graph as image (opens in a new a window)&lt;/a&gt;, que quer dizer, Salve o gráfico como imagem (abra em uma nova janela).&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
É fácil ou não é?&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
O vídeo abaixo mostra algumas de suas funções.&lt;/div&gt;
&lt;div&gt;
&lt;iframe allowfullscreen="" frameborder="0" height="360" src="http://www.youtube.com/embed/z5GtcOpGl7Y?feature=player_embedded" width="640"&gt;&lt;/iframe&gt;&lt;br /&gt;
[Vídeo incorporado de&amp;nbsp;&lt;a href="http://www.youtube.com/user/desmosinc" target="_blank"&gt;youtube.com/user/desmosinc&lt;/a&gt;]&lt;br /&gt;
&lt;div style="text-align: center;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: center;"&gt;
&lt;span style="font-size: large;"&gt;&lt;b&gt;DOWNLOAD&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="https://chrome.google.com/webstore/detail/bhdheahnajobgndecdbggfmcojekgdko" imageanchor="1" style="margin-left: 1em; margin-right: 1em;" target="_blank"&gt;&lt;img border="0" src="https://www.google.com/intl/en/images/logos/chrome_web_store_logo.gif" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="text-align: center;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;br /&gt;
Outra extensão semelhante:&lt;br /&gt;
&lt;div style="font-weight: bold; text-align: justify;"&gt;
&lt;b&gt;&lt;div style="display: inline !important;"&gt;
&lt;b&gt;&lt;a href="http://www.prof-edigleyalexandre.com/2011/11/extensao-para-o-chrome-que-constroi.html" target="_blank"&gt;Graph.tk&lt;/a&gt;&amp;nbsp;&lt;/b&gt;&lt;/div&gt;
&lt;/b&gt;&lt;/div&gt;
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&lt;br /&gt;&lt;/div&gt;
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&lt;br /&gt;&lt;/div&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/edigleyalexandre/~4/CBU6sj0p144" height="1" width="1"/&gt;</description><link>http://feedproxy.google.com/~r/edigleyalexandre/~3/CBU6sj0p144/desenhe-graficos-de-equacoes-com-esta.html</link><author>noreply@blogger.com (Edigley Alexandre)</author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://1.bp.blogspot.com/-Aogz22PeQnA/TzFShF8fc3I/AAAAAAAACsg/4mBuP_2P4z0/s72-c/Graphing_calculator01.png" height="72" width="72" /><thr:total>0</thr:total><creativeCommons:license>http://creativecommons.org/licenses/by-nc-sa/3.0/</creativeCommons:license><feedburner:origLink>http://www.prof-edigleyalexandre.com/2012/02/desenhe-graficos-de-equacoes-com-esta.html</feedburner:origLink></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-125900602153146940.post-1193580907112785199</guid><pubDate>Mon, 06 Feb 2012 11:00:00 +0000</pubDate><atom:updated>2012-02-06T20:10:10.265-02:00</atom:updated><category domain="http://www.blogger.com/atom/ns#">informática</category><category domain="http://www.blogger.com/atom/ns#">matemática</category><category domain="http://www.blogger.com/atom/ns#">geometria</category><category domain="http://www.blogger.com/atom/ns#">software</category><category domain="http://www.blogger.com/atom/ns#">internet</category><title>Calculadora para o Teorema de Pitágoras</title><description>&lt;p&gt;&lt;a href="http://feedads.g.doubleclick.net/~a/eZpKotmunHFglFAGemfnp3zKzWg/0/da"&gt;&lt;img src="http://feedads.g.doubleclick.net/~a/eZpKotmunHFglFAGemfnp3zKzWg/0/di" border="0" ismap="true"&gt;&lt;/img&gt;&lt;/a&gt;&lt;br/&gt;
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&lt;/div&gt;
&lt;script type="text/javascript"&gt;
&lt;!--
google_ad_client = "ca-pub-0103803850989096";
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&lt;div style="text-align: justify;"&gt;
&lt;b&gt;Pythagorean Theorem Calculator&lt;/b&gt;&amp;nbsp;é uma ferramenta online usada para calcular o terceiro lado em um triângulo retângulo, tendo os dois outros valores secundários conhecidos. O programinha é uma função trigonométrica definida como a soma das áreas dos dois quadrados construídos sobre &lt;i&gt;&lt;b&gt;a&lt;/b&gt;&lt;/i&gt; e &lt;i&gt;&lt;b&gt;b&lt;/b&gt;&lt;/i&gt;&amp;nbsp;que é igual a área do quadrado sobre a hipotenusa &lt;b&gt;&lt;i&gt;c.&lt;/i&gt;&lt;/b&gt;&amp;nbsp;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://4.bp.blogspot.com/-09jYy_r2GKY/Ty_-K_y6YuI/AAAAAAAACsY/rYRw75yYr64/s1600/pythagoras-theorem.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"&gt;&lt;img border="0" height="230" src="http://4.bp.blogspot.com/-09jYy_r2GKY/Ty_-K_y6YuI/AAAAAAAACsY/rYRw75yYr64/s320/pythagoras-theorem.gif" width="320" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
O teorema pode ser escrito como uma equação que relaciona os comprimentos do lados &lt;i&gt;&lt;b&gt;a&lt;/b&gt;&lt;/i&gt;, &lt;b&gt;&lt;i&gt;b&lt;/i&gt;&lt;/b&gt; e &lt;i&gt;&lt;b&gt;c&lt;/b&gt;&lt;/i&gt;, muitas vezes chamado de equação de Pitágoras &lt;b&gt;a² + b² = c²&lt;/b&gt;. A chave para a fórmula de distância, o teorema está implicitamente presente em todos os modelos científicos e cálculos de engenharia que envolvem relações espaciais ou trigonometria.&lt;br /&gt;
&lt;br /&gt;
Insira os valores para duas variáveis, clique em &lt;b&gt;&lt;i&gt;Calculate&lt;/i&gt;&lt;/b&gt; e encontre a terceira variável no triângulo retângulo. Tentei traduzir o script, mas pensei que não terá dificuldade para usar esse programinha.&lt;/div&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;center&gt;&lt;br /&gt;
&lt;script type="text/javascript"&gt;
var bg="ffffff";
var t_width="400px";
var t_height="500px";
var type="number-conversion";
var title="pythagoras-theorem";
&lt;/script&gt;&lt;br /&gt;
&lt;script src="http://ncalculators.com/gadget.js" type="text/javascript"&gt;
&lt;/script&gt;&lt;center&gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;&lt;div style="text-align: justify;"&gt;
Fonte do código: &lt;a href="http://ncalculators.com/number-conversion/pythagoras-theorem.htm/" target="_blank"&gt;ncalculators.com&lt;/a&gt;&lt;/div&gt;
&lt;br /&gt;
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&lt;b&gt;Math&lt;/b&gt; é um editor de fórmulas e equações da suíte de aplicativos LibreOffice. O Math não deixa a desejar em relação a nenhum outro software de inserção de equações em documentos. Suas fórmulas podem incluir uma vasta gama de elementos, a partir de frações, os termos com expoentes e índices, integrais e funções matemáticas, desigualdades, sistemas de equações e matrizes, etc.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
A linguagem matemática na descrição das fórmulas é fácil de aprender e usar, e você vai aprender rapidamente como criar e editar fórmulas complexas com pouca prática.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Por exemplo, para inserir uma fração, você usa a palavra "over". O comando&amp;nbsp;{a} over {b} = {b} over {a + b} gerará:&lt;br /&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://3.bp.blogspot.com/-IlENLKYeZ_g/Ty1e_eEzVBI/AAAAAAAACr4/h7e7lAI2uWw/s1600/libreoffice+math+fra%C3%A7%C3%A3o.png" imageanchor="1"&gt;&lt;img border="0" height="400" src="http://3.bp.blogspot.com/-IlENLKYeZ_g/Ty1e_eEzVBI/AAAAAAAACr4/h7e7lAI2uWw/s640/libreoffice+math+fra%C3%A7%C3%A3o.png" width="640" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;br /&gt;
Para um fórmula que envolva mais símbolos, o comando&amp;nbsp;x={-b+-sqrt{b^{2}-4.a.c}} over {2.a} gerará:&lt;br /&gt;
&lt;br /&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://4.bp.blogspot.com/-8NMD5VRoaVE/Ty1fZXts2qI/AAAAAAAACsA/FyH8D1S5SdM/s1600/libre+office+math.png" imageanchor="1"&gt;&lt;img border="0" height="400" src="http://4.bp.blogspot.com/-8NMD5VRoaVE/Ty1fZXts2qI/AAAAAAAACsA/FyH8D1S5SdM/s640/libre+office+math.png" width="640" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;br /&gt;
Os componentes da linguagem de descrição de fórmula são fáceis de inserir através de barras de ferramentas e menus pop-up (que abrem assim que o Math é executado):&lt;br /&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://4.bp.blogspot.com/-RaZJsnYo6uM/Ty1jQqsJneI/AAAAAAAACsI/c1CgZcl6ak8/s1600/pop-up01.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"&gt;&lt;img border="0" src="http://4.bp.blogspot.com/-RaZJsnYo6uM/Ty1jQqsJneI/AAAAAAAACsI/c1CgZcl6ak8/s1600/pop-up01.png" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
No menu &lt;b&gt;Exibir&lt;/b&gt;&amp;nbsp;existem outras opções.&amp;nbsp;Você pode definir uma variedade de propriedades e introduzir os parâmetros para objetos de fórmulas através do menu &lt;b&gt;Formatar&lt;/b&gt;, enquanto o editor de equações é aberto.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Suas fórmulas podem ser inseridos em seus documentos, salvar em formato .ODF ou em formato .PDF.&lt;/div&gt;
&lt;br /&gt;
&lt;div style="text-align: center;"&gt;
&lt;span style="font-size: large;"&gt;&lt;b&gt;Baixe o LibreOffice&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://www.libreoffice.org/download/" imageanchor="1" style="margin-left: 1em; margin-right: 1em;" target="_blank"&gt;&lt;img border="0" src="http://3.bp.blogspot.com/-Kf7r0-R6ZJw/Ty1m3FmGuMI/AAAAAAAACsQ/ELpllEENnE8/s1600/libreoffice+download.png" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;br /&gt;
Fonte original:&amp;nbsp;&lt;a href="http://www.libreoffice.org/features/math/" target="_blank"&gt;libreoffice.org/features/math/&lt;/a&gt;&lt;br /&gt;
&lt;br /&gt;
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Uma tirinha do &lt;b&gt;Garganhando.com&lt;/b&gt; para descontrair essa sexta-feira.&lt;br /&gt;
&lt;br /&gt;
&lt;table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"&gt;&lt;tbody&gt;
&lt;tr&gt;&lt;td style="text-align: center;"&gt;&lt;a href="http://www.gargalhando.com/2012/02/02/ajuda-com-os-deveres/" imageanchor="1" style="margin-left: auto; margin-right: auto;" target="_blank" title="Post original, clique na imagem."&gt;&lt;img border="0" src="http://2.bp.blogspot.com/-ZWMy3Wu0Hoc/Tyv3g6McsvI/AAAAAAAACrw/fWI8oKGeVAs/s1600/Quanto+%C3%A9+sete+menos+sete.jpg" /&gt;&lt;/a&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class="tr-caption"&gt;Mal sabe o que o espera…&lt;/td&gt;&lt;/tr&gt;
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&lt;br /&gt;
&lt;div style="text-align: justify;"&gt;
Essa tirinha me fez lembrar dos alunos que estão no 6º ano (antiga 5ª série). O conjunto numérico que estudam durante o ano todo, são os Naturais. Os números negativos (conjunto dos números Inteiros), são introduzidos aos poucos e estudado com mais ênfase no 7º ano.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
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Como eles não estão habituados com a carga maior de conteúdos matemáticos, ficam de início um pouco "perdidos" com tanta informação. Por isso que a legenda original da imagem resume bem meus avisos irônicos durante o ano todo, independente da série/ano que estão cursando.&lt;/div&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/edigleyalexandre/~4/A1qxKyuU5ig" height="1" width="1"/&gt;</description><link>http://feedproxy.google.com/~r/edigleyalexandre/~3/A1qxKyuU5ig/quanto-e-3-7.html</link><author>noreply@blogger.com (Edigley Alexandre)</author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://2.bp.blogspot.com/-ZWMy3Wu0Hoc/Tyv3g6McsvI/AAAAAAAACrw/fWI8oKGeVAs/s72-c/Quanto+%C3%A9+sete+menos+sete.jpg" height="72" width="72" /><thr:total>0</thr:total><creativeCommons:license>http://creativecommons.org/licenses/by-nc-sa/3.0/</creativeCommons:license><feedburner:origLink>http://www.prof-edigleyalexandre.com/2012/02/quanto-e-3-7.html</feedburner:origLink></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-125900602153146940.post-374285397915774488</guid><pubDate>Fri, 03 Feb 2012 11:30:00 +0000</pubDate><atom:updated>2012-02-03T11:37:39.692-02:00</atom:updated><category domain="http://www.blogger.com/atom/ns#">blog</category><category domain="http://www.blogger.com/atom/ns#">matemática</category><category domain="http://www.blogger.com/atom/ns#">internet</category><category domain="http://www.blogger.com/atom/ns#">dicas</category><title>A Matemática e a blogosfera</title><description>&lt;p&gt;&lt;a href="http://feedads.g.doubleclick.net/~a/rvFDOXeCqoReWWqA_BWLLUan3C8/0/da"&gt;&lt;img src="http://feedads.g.doubleclick.net/~a/rvFDOXeCqoReWWqA_BWLLUan3C8/0/di" border="0" ismap="true"&gt;&lt;/img&gt;&lt;/a&gt;&lt;br/&gt;
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Não estou a tanto tempo assim conectado na internet e por consequência na blogosfera, mas é fácil perceber o crescimento dela, assim como todo o conteúdo que passa por ela. Destaco em específico, como a Matemática vem sendo cada vez mais divulgada em sites/blogs e em redes sociais (Twitter, Facebook, Orkut, Fóruns, etc.). São mais de&amp;nbsp;46 milhões de resultados para o termo &lt;i&gt;Matemática&lt;/i&gt; no Google, parece um número pequeno, mas não é.&lt;br /&gt;
&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://3.bp.blogspot.com/-0OS0yXvykTg/TyvjD6ygdvI/AAAAAAAACro/0qU-D3YzxTs/s1600/rede.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"&gt;&lt;img border="0" height="211" src="http://3.bp.blogspot.com/-0OS0yXvykTg/TyvjD6ygdvI/AAAAAAAACro/0qU-D3YzxTs/s320/rede.jpg" width="320" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Nesses poucos anos que estou por aqui, noto um crescimento gigantesco de pessoas que compartilham seus trabalhos voltados à Matemática Pura e Aplicada ou ao Ensino de Matemática na blogosfera. Há muitos fóruns, blogs, grupos de discussão e até mesmo rede social para os amantes da Matemática.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
E a Matemática precisa ser divulgada?&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Não é apenas divulgar por divulgar, ela é famosa por si só. O importante é disponibilizar todo e qualquer conteúdo relevante gerado na internet para o maior número possível de pessoas, que procuram por conteúdo produtivo e que farão uso no seu trabalho (professores e alunos) ou no seu dia a dia, adquirindo muita informação e conhecimento. Não importa se é um blog de humor ou um blog técnico, qualquer forma de divulgação da Matemática é válida.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Por falar tanto em compartilhar, deixo aqui três dicas para que você divulgue seu trabalho e se faça mais presente na blogosfera, naquilo que você gosta escrever, ler, ouvir ou assistir.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;b&gt;REDE SOCIAL PARA OS AMANTES DA MATEMÁTICA&lt;/b&gt;&lt;/div&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://www.amomatematica.com/" imageanchor="1" style="margin-left: 1em; margin-right: 1em;" target="_blank"&gt;&lt;img border="0" src="http://1.bp.blogspot.com/-8vJLZnymWKE/Tygx4J8uAnI/AAAAAAAACq4/9YJdRniDu1M/s1600/matematicaheader_Fb2.jpg" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
O &lt;b&gt;www.AmoMatemática.com&lt;/b&gt; é uma rede perfeita para você criar um blog, participar de grupos e fóruns, enviar dúvidas, bater um papo no chat integrado ao sistema e muito mais. Participe! Terei imenso prazer de vê-lo por lá. Sou membro/moderador, quem sabe aprovo alguma publicação para sua página.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;center&gt;&lt;embed allowfullscreen="true" allowscriptaccess="always" bgcolor="#FFFFFF" flashvars="backgroundColor=0xFFFFFF&amp;amp;textColor=0x004276&amp;amp;config=http%3A%2F%2Fwww.amomatematica.com%2Fmain%2Fbadge%2FshowPlayerConfig%3Fxg_source%3Dbadge%26size%3Dlarge%26username%3D1ig9onlmgegzs" height="180" pluginspage="http://www.macromedia.com/go/getflashplayer" scale="noscale" src="http://static.ning.com/socialnetworkmain/widgets/index/swf/badge.swf?v=201201272043" type="application/x-shockwave-flash" width="420" wmode="opaque"&gt;&lt;/embed&gt;&lt;/center&gt;&lt;br /&gt;
&lt;br /&gt;
&lt;b&gt;BLOGOSFERA BRASIL&lt;/b&gt;&lt;br /&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://www.blogosferabrasil.com.br/" imageanchor="1" style="margin-left: 1em; margin-right: 1em;" target="_blank"&gt;&lt;img border="0" src="http://3.bp.blogspot.com/-EvQVZRdo05Y/Tyg240MPMeI/AAAAAAAACrA/06wuGBbjKMY/s1600/banner_blogosferabrasil_468x60.png" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;b&gt;&lt;br /&gt;&lt;/b&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
É uma rede dedicada para blogueiros, independente do nicho que ele atue. O objetivo é de&amp;nbsp;compartilhar conteúdo através de projetos (blogs), eventos, fóruns de discussão, etc. Assim como o AmoMatemática.com, a Blogosfera Brasil é desenvolvida sob a plataforma &lt;a href="http://br.ning.com/" target="_blank"&gt;ning&lt;/a&gt;, que oferece várias ferramentas, como chat por exemplo.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Criei um grupo na Blogosfera Brasil, dedicado a divulgação de blogs na área de Matemática. O grupo chama-se &lt;b&gt;Matemática na Blogosfera&lt;/b&gt;, clique na imagem abaixo e mostre seu trabalho por lá. A Blogosfera Brasil pode te dar um ótimo retorno de tráfego para seu blog e isso significa mais visitantes.&amp;nbsp;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://www.blogosferabrasil.com.br/group/matematica-na-blogosfera" imageanchor="1" style="margin-left: 1em; margin-right: 1em;" target="_blank"&gt;&lt;img border="0" height="200" src="http://2.bp.blogspot.com/-zIoma7PVyNY/Tyg60TGkI4I/AAAAAAAACrI/5F_jdR5D_HU/s200/Matem%C3%A1tica_na_blogosfera2.png" width="170" /&gt;&lt;/a&gt;&lt;/div&gt;
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&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;b&gt;UNIÃO DOS BLOGS DE MATEMÁTICA - UBM&lt;/b&gt;&lt;br /&gt;
É um blog que funciona como uma rede de blogs matemáticos. É um excelente caminho para aqueles que estão iniciando. A divulgação dos blogs é feita através do RSS feed de cada blog filiado e também em posts chamados de &lt;b&gt;Carnaval da UBM&lt;/b&gt;.&lt;br /&gt;
&lt;br /&gt;
Clique na imagem e saiba como se tornar um filiado. Caso não encontrem esse humilde blog por lá, é porque foi excluído por conta de uma regra simples: não mostrar o banner da UBM na página inicial deste blog, mas numa &lt;a href="http://www.prof-edigleyalexandre.com/p/parceria.html" target="_blank"&gt;página estática&lt;/a&gt;. Fazer o que? (tenho meus motivos), mas regras são regras.&lt;br /&gt;
&lt;br /&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://ubmatematica.blogspot.com/" imageanchor="1" style="margin-left: 1em; margin-right: 1em;" target="_blank"&gt;&lt;img border="0" src="http://2.bp.blogspot.com/-7xvtpy6AUH8/Tyg-WyqzB1I/AAAAAAAACrQ/nWvaXSOT4KU/s1600/Banner_UBM.jpg" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;br /&gt;
&lt;br /&gt;
E viva a Matemática!&lt;br /&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;br /&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/edigleyalexandre/~4/xtHWXk2GYos" height="1" width="1"/&gt;</description><link>http://feedproxy.google.com/~r/edigleyalexandre/~3/xtHWXk2GYos/matematica-e-blogosfera.html</link><author>noreply@blogger.com (Edigley Alexandre)</author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://3.bp.blogspot.com/-0OS0yXvykTg/TyvjD6ygdvI/AAAAAAAACro/0qU-D3YzxTs/s72-c/rede.jpg" height="72" width="72" /><thr:total>0</thr:total><creativeCommons:license>http://creativecommons.org/licenses/by-nc-sa/3.0/</creativeCommons:license><feedburner:origLink>http://www.prof-edigleyalexandre.com/2012/02/matematica-e-blogosfera.html</feedburner:origLink></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-125900602153146940.post-4734081089451674465</guid><pubDate>Thu, 02 Feb 2012 11:30:00 +0000</pubDate><atom:updated>2012-02-02T09:30:00.975-02:00</atom:updated><category domain="http://www.blogger.com/atom/ns#">piadas matemáticas</category><title>Piadas matemáticas #15</title><description>&lt;p&gt;&lt;a href="http://feedads.g.doubleclick.net/~a/x6I2z1mlL79BnWzHB79weBdo_UQ/0/da"&gt;&lt;img src="http://feedads.g.doubleclick.net/~a/x6I2z1mlL79BnWzHB79weBdo_UQ/0/di" border="0" ismap="true"&gt;&lt;/img&gt;&lt;/a&gt;&lt;br/&gt;
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&lt;div style="text-align: justify;"&gt;
Dois homens estão se divertindo em um bar. Lá fora, há uma tempestade terrível. Finalmente, um dos homens acha que é hora de ir embora. Como ele tem bebido muito, ele decide voltar para casa.&amp;nbsp;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;span style="font-family: Calibri, sans-serif; font-size: 11pt; line-height: 115%;"&gt;—&amp;nbsp;&lt;/span&gt;Mas você não tem medo de ser atingido por um raio? seu amigo interroga.&amp;nbsp;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;span style="font-family: Calibri, sans-serif; font-size: 11pt; line-height: 115%;"&gt;—&amp;nbsp;&lt;/span&gt;Nem um pouco. Estatísticas mostram que, nesta parte do país, uma pessoa por ano é atingida por um raio, e que uma pessoa morreu no hospital há três semanas.&lt;/div&gt;
&lt;br /&gt;
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Caso você seja leigo em Matemática, não se espante com a pergunta no título deste post. Para os aficionados por essa ciência linda, não há porque ficar perplexo. No máximo podemos ficar maravilhados em ver como a Matemática pode ser aplicada.&lt;/div&gt;
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&lt;a href="http://4.bp.blogspot.com/--7cdS6s0x4c/Tyidq3qcZTI/AAAAAAAACrY/guugF8K273c/s1600/A+Matem%C3%A1tica+pode+curar+o+c%C3%A2ncer.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"&gt;&lt;img border="0" height="232" src="http://4.bp.blogspot.com/--7cdS6s0x4c/Tyidq3qcZTI/AAAAAAAACrY/guugF8K273c/s320/A+Matem%C3%A1tica+pode+curar+o+c%C3%A2ncer.jpg" width="320" /&gt;&lt;/a&gt;&lt;/div&gt;
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Leia&amp;nbsp;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;/div&gt;
&lt;ul&gt;
&lt;li&gt;&lt;a href="http://www.prof-edigleyalexandre.com/2011/02/para-que-serve-matematica.html" target="_blank"&gt;Para que serve a Matemática?&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href="http://gigamatematica.blogspot.com/2011/07/capacidade-cardiaca.html" target="_blank"&gt;Capacidade cardíaca&lt;/a&gt; (uma aplicação matemática na medicina)&lt;/li&gt;
&lt;/ul&gt;
&lt;br /&gt;
&lt;div style="text-align: justify;"&gt;
Lendo um longo e gostoso artigo publicado no &lt;b&gt;Math-blog&amp;nbsp;&lt;/b&gt;por John F. McGowan, Ph.D. em Matemática Aplicada,  me instigou de instantâneo a compartilhá-lo aqui. O post começa com uma citação do 37º Presidente dos Estados Unidos, Richard M. Nixon, ao falar sobre a guerra contra ao câncer.&lt;/div&gt;
&lt;blockquote class="tr_bq" style="text-align: justify;"&gt;
"Também vou pedir uma apropriação de um extra de $100 milhões para lançar uma intensa campanha para encontrar a cura para o câncer, e vou pedir mais tarde para que os fundos adicionais possam ser efetivamente usados. O tempo chegou na América, quando o mesmo tipo de esforço concentrado que dividiu o átomo e levou o homem à lua deve ser voltado para o horror dessa doença. Vamos fazer um compromisso nacional total para atingir esse objetivo." [&lt;b&gt;Discurso do Estado da União, 1971&lt;/b&gt;]&lt;/blockquote&gt;
&lt;br /&gt;
&lt;div style="text-align: justify;"&gt;
O artigo discute o uso de novas tecnologias computacionais capazes de utilizar sistemas inteligentes para executar cálculos matemáticos afim de identificar e matar as células provocadoras do câncer. Não me surpreende em ver o uso de softwares open source (código aberto) nesse projeto.&lt;/div&gt;
&lt;blockquote class="tr_bq" style="text-align: justify;"&gt;
Há uma série de tentativas atuais para aplicar a Matemática para a cura ou o tratamento do câncer. Um grande número são tentativas de uso de equações diferenciais para modelar o crescimento e a propagação do câncer e sua resposta a vários tratamentos do sistema imunológico...[Trecho do artigo]&lt;/blockquote&gt;
A citação acima já é suficiente para deixá-lo curioso?&lt;br /&gt;
&lt;br /&gt;
Leia o artigo na íntegra, acessando &lt;a href="http://www.google.com/translate?sl=auto&amp;amp;tl=pt&amp;amp;u=http%3A%2F%2Fmath-blog.com%2F2011%2F07%2F11%2Fcan-mathematics-cure-cancer%2F" target="_blank"&gt;esse link&lt;/a&gt;. (link direto para o Google Translate em Português do Brasil). A tradução não é perfeita, mas é possível fazer uma leitura satisfatória. &lt;a href="http://math-blog.com/2011/07/11/can-mathematics-cure-cancer/" target="_blank"&gt;Nesse link&lt;/a&gt;, o artigo original.&lt;br /&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/edigleyalexandre/~4/NltyXLmmbIk" height="1" width="1"/&gt;</description><link>http://feedproxy.google.com/~r/edigleyalexandre/~3/NltyXLmmbIk/matematica-pode-curar-o-cancer.html</link><author>noreply@blogger.com (Edigley Alexandre)</author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://4.bp.blogspot.com/--7cdS6s0x4c/Tyidq3qcZTI/AAAAAAAACrY/guugF8K273c/s72-c/A+Matem%C3%A1tica+pode+curar+o+c%C3%A2ncer.jpg" height="72" width="72" /><thr:total>0</thr:total><creativeCommons:license>http://creativecommons.org/licenses/by-nc-sa/3.0/</creativeCommons:license><feedburner:origLink>http://www.prof-edigleyalexandre.com/2012/02/matematica-pode-curar-o-cancer.html</feedburner:origLink></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-125900602153146940.post-3050432202382270949</guid><pubDate>Tue, 31 Jan 2012 11:30:00 +0000</pubDate><atom:updated>2012-01-31T14:22:35.492-02:00</atom:updated><category domain="http://www.blogger.com/atom/ns#">informática</category><category domain="http://www.blogger.com/atom/ns#">excel</category><category domain="http://www.blogger.com/atom/ns#">dicas</category><title>Organize suas contas em 2012 [Versão LibreOffice]</title><description>&lt;p&gt;&lt;a href="http://feedads.g.doubleclick.net/~a/_jN5mWT0bHKF-df55d8n6TsGpWQ/0/da"&gt;&lt;img src="http://feedads.g.doubleclick.net/~a/_jN5mWT0bHKF-df55d8n6TsGpWQ/0/di" border="0" ismap="true"&gt;&lt;/img&gt;&lt;/a&gt;&lt;br/&gt;
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Com mais de 3 mil visitas, &amp;nbsp;o post&amp;nbsp;&lt;a href="http://www.prof-edigleyalexandre.com/2010/12/organize-suas-contas-em-2011-planilha.html" target="_blank"&gt;Organize suas contas em 2011 [planilha do excel]&lt;/a&gt;&amp;nbsp;foi de grande ajuda aos leitores e visitantes do blog. Se você é aficionado em organizar suas tarefas financeiras e não viu essa planilha, escolha entre a versão do Excel (no link acima) ou para o LibreOffice escolhendo um dos servidores abaixo para baixá-la.&lt;/div&gt;
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Há alguns anos ela salva o meu pouco tempo, pois a planilha que disponho e compartilho aqui, é totalmente automática. Em resumo, basta informar a sua renda mensal e preencher os demais campos com suas despesas. A medida que for preenchendo ela faz o cálculo automático do saldo geral e também mostra o percentual gasto em cada área de suas despesas. [blog]&lt;/blockquote&gt;
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Para continuar a divulgação desta planilha, disponibilizo a versão para a suíte de aplicativos LibreOffice, que não deixa nada a desejar em relação ao Office da Microsoft.&lt;/div&gt;
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&lt;br /&gt;&lt;/td&gt; &lt;td style="font-weight: bold; text-align: center; vertical-align: top; width: 108px;"&gt;&lt;a href="http://www.box.com/s/5zr76uc94bmj1aa8uypn" target="_blank"&gt;&lt;img alt="Box" src="http://i679.photobucket.com/albums/vv153/edigleyg3/Icones/BLOG2012/box.png" style="border: 0px solid; height: 32px; width: 57px;" title="Box" /&gt;&lt;/a&gt;&lt;br /&gt;
Box&lt;br /&gt;
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&lt;div style="text-align: justify;"&gt;
A compatibilidade entre os documentos do Office da Microsoft e do LibreOffice (antigo BrOffice) é tanta, que é possível executar o mesmo arquivo, de mesma extensão nos dois aplicativos. Por exemplo, essa planilha que pode tanto ser executada no Excel como no Calc. Tudo depende da opção de cada um.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
A planilha para o LibreOffice está no formato &lt;b&gt;&lt;i&gt;.ots&lt;/i&gt;&lt;/b&gt;. Vale lembrar que ela é uma espécie de programinha. Preencha todos valores que necessita, logo em seguida salve-a no formato &lt;i&gt;&lt;b&gt;.ods.&lt;/b&gt;&lt;/i&gt;&lt;/div&gt;
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&lt;i&gt;&lt;b&gt;&lt;br /&gt;&lt;/b&gt;&lt;/i&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;b&gt;Dica:&lt;/b&gt; Para o arquivo gerado &lt;i&gt;&lt;b&gt;.ods&lt;/b&gt;&lt;/i&gt;, dê o nome de acordo com o mês que preencher, por exemplo, janeiro2012.&lt;/div&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/edigleyalexandre/~4/zCEIxGNiINs" height="1" width="1"/&gt;</description><link>http://feedproxy.google.com/~r/edigleyalexandre/~3/zCEIxGNiINs/organize-suas-contas-em-2012-versao.html</link><author>noreply@blogger.com (Edigley Alexandre)</author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://3.bp.blogspot.com/-gDygZmVXJNA/TygVPQMI_TI/AAAAAAAACqw/poKvRGfoh_E/s72-c/despesas_pessoais.png" height="72" width="72" /><thr:total>0</thr:total><creativeCommons:license>http://creativecommons.org/licenses/by-nc-sa/3.0/</creativeCommons:license><feedburner:origLink>http://www.prof-edigleyalexandre.com/2012/01/organize-suas-contas-em-2012-versao.html</feedburner:origLink></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-125900602153146940.post-929507614087531623</guid><pubDate>Mon, 30 Jan 2012 17:10:00 +0000</pubDate><atom:updated>2012-01-30T15:10:59.103-02:00</atom:updated><category domain="http://www.blogger.com/atom/ns#">matemática</category><category domain="http://www.blogger.com/atom/ns#">Quadrinhos</category><category domain="http://www.blogger.com/atom/ns#">imagens</category><category domain="http://www.blogger.com/atom/ns#">humor</category><title>Conheça os números</title><description>&lt;p&gt;&lt;a href="http://feedads.g.doubleclick.net/~a/l9jxHdhObkH5_HKTcGB9G-H30G8/0/da"&gt;&lt;img src="http://feedads.g.doubleclick.net/~a/l9jxHdhObkH5_HKTcGB9G-H30G8/0/di" border="0" ismap="true"&gt;&lt;/img&gt;&lt;/a&gt;&lt;br/&gt;
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&lt;div style="text-align: justify;"&gt;
Uma forma diferente e bem humorada de conhecer os números pertencentes aos conjuntos numéricos mais famosos. Encontrei essa imagem no blog&amp;nbsp;&lt;b&gt;COMICS INCIDENTAL&lt;/b&gt;&amp;nbsp;criado por&amp;nbsp;Grant Snider, um estudante de Ortodontia nos Estados Unidos (ele deve gostar de Matemática rsrs...).&lt;/div&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;a href="http://i679.photobucket.com/albums/vv153/edigleyg3/Icones/BLOG2012/conheca_os_numeros.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;" target="_blank"&gt;&lt;img border="0" src="http://3.bp.blogspot.com/-MzVu9whExhs/TyW42vWn86I/AAAAAAAACqo/jmSAzdHXi8M/s1600/conheca_os_numeros.jpg" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;span style="text-align: justify;"&gt;Se você quiser conhecer melhor cada um desses números, deixei aqui os links diretos para o Wikipédia:&amp;nbsp;&lt;/span&gt;&lt;a href="http://pt.wikipedia.org/wiki/N%C3%BAmero_real" style="text-align: justify;" target="_blank"&gt;Real&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://pt.wikipedia.org/wiki/N%C3%BAmeros_pares_e_%C3%ADmpares" style="text-align: justify;" target="_blank"&gt;Ímpar&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://pt.wikipedia.org/wiki/N%C3%BAmero_imagin%C3%A1rio" style="text-align: justify;" target="_blank"&gt;Imaginário&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://pt.wikipedia.org/wiki/N%C3%BAmero_irracional" style="text-align: justify;" target="_blank"&gt;Irracional&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://pt.wikipedia.org/wiki/N%C3%BAmero_racional" style="text-align: justify;" target="_blank"&gt;Racional&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://pt.wikipedia.org/wiki/Constante_de_Avogadro" style="text-align: justify;" target="_blank"&gt;Avogadro&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://pt.wikipedia.org/wiki/N%C3%BAmero_primo" style="text-align: justify;" target="_blank"&gt;Primo&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://pt.wikipedia.org/wiki/N%C3%BAmero_natural" style="text-align: justify;" target="_blank"&gt;Natural&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://es.wikipedia.org/wiki/N%C3%BAmeros_amigos" style="text-align: justify;" target="_blank"&gt;Amigo&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://en.wikipedia.org/wiki/Friendly_number#Solitary_numbers" style="text-align: justify;" target="_blank"&gt;Solitário&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://pt.wikipedia.org/wiki/N%C3%BAmero_abundante" style="text-align: justify;" target="_blank"&gt;Abundante&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://pt.wikipedia.org/wiki/N%C3%BAmero_de_Fibonacci" style="text-align: justify;" target="_blank"&gt;Fibonacci&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://pt.wikipedia.org/wiki/Numera%C3%A7%C3%A3o_romana" style="text-align: justify;" target="_blank"&gt;Romano&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://pt.wikipedia.org/wiki/N%C3%BAmero_transcendente" style="text-align: justify;" target="_blank"&gt;Transcendental&lt;/a&gt;&lt;span style="text-align: justify;"&gt;&amp;nbsp;|&amp;nbsp;&lt;/span&gt;&lt;a href="http://pt.wikipedia.org/wiki/N%C3%BAmero_complexo" style="text-align: justify;" target="_blank"&gt;Complexo&lt;/a&gt;
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&lt;br /&gt;
&lt;br /&gt;
[Imagem original:&amp;nbsp;&lt;a href="http://thoughtballoonhelium.blogspot.com/2012/01/meet-numbers.html" target="_blank"&gt;Meet the numbers&lt;/a&gt;]&lt;br /&gt;
&lt;br /&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/edigleyalexandre/~4/-I9mmT-hkJA" height="1" width="1"/&gt;</description><link>http://feedproxy.google.com/~r/edigleyalexandre/~3/-I9mmT-hkJA/conheca-os-numeros.html</link><author>noreply@blogger.com (Edigley Alexandre)</author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://3.bp.blogspot.com/-MzVu9whExhs/TyW42vWn86I/AAAAAAAACqo/jmSAzdHXi8M/s72-c/conheca_os_numeros.jpg" height="72" width="72" /><thr:total>0</thr:total><creativeCommons:license>http://creativecommons.org/licenses/by-nc-sa/3.0/</creativeCommons:license><feedburner:origLink>http://www.prof-edigleyalexandre.com/2012/01/conheca-os-numeros.html</feedburner:origLink></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-125900602153146940.post-5267748596054366140</guid><pubDate>Sun, 29 Jan 2012 17:10:00 +0000</pubDate><atom:updated>2012-01-29T15:10:44.974-02:00</atom:updated><category domain="http://www.blogger.com/atom/ns#">matemática</category><category domain="http://www.blogger.com/atom/ns#">frações</category><category domain="http://www.blogger.com/atom/ns#">excel</category><title>Simplificação de frações [Planilha do Excel]</title><description>&lt;p&gt;&lt;a href="http://feedads.g.doubleclick.net/~a/ZwrAQADEKuf0gOCmsSaTDaA4e1A/0/da"&gt;&lt;img src="http://feedads.g.doubleclick.net/~a/ZwrAQADEKuf0gOCmsSaTDaA4e1A/0/di" border="0" ismap="true"&gt;&lt;/img&gt;&lt;/a&gt;&lt;br/&gt;
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A última planilha que faço uso do Excel para as aulas sobre frações está pronta.&amp;nbsp;As planilhas não trazem nenhum método inovador, elas apenas dão uma alternativa de estudar Matemática de uma forma diferente, dinâmica e tecnológica. Todas as planilhas são simples e não precisa ser um expert em Excel para manuseá-las.&lt;br /&gt;
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&lt;a href="http://3.bp.blogspot.com/-vppYHIss-aE/TyS_vkAyk3I/AAAAAAAACqg/R_FQonjygOY/s1600/simplificacao_de_fracoes2.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"&gt;&lt;img border="0" height="185" src="http://3.bp.blogspot.com/-vppYHIss-aE/TyS_vkAyk3I/AAAAAAAACqg/R_FQonjygOY/s400/simplificacao_de_fracoes2.png" width="400" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Através de testes e condicionais próprias em cada planilha é possível analisar as operações básicas realizadas com frações, de acordo com os dados inseridos pelos alunos na planilha. A interação instantânea entre o aluno e a tarefa informatizada, é um ponto forte que acho importante. Espero que façam bom uso das planilhas.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: center;"&gt;
&lt;b&gt;&lt;span style="font-size: large;"&gt;DOWNLOAD&lt;/span&gt;&lt;/b&gt;&lt;/div&gt;
&lt;div style="text-align: center;"&gt;
&lt;span style="font-size: x-small;"&gt;Escolha o servidor que mais lhe agrada de faça o download dessa planilha&lt;/span&gt;&lt;/div&gt;
&lt;br /&gt;
&lt;center&gt;&lt;table border="0" cellpadding="2" cellspacing="2" style="text-align: left; width: 640px;"&gt;&lt;tbody&gt;
&lt;tr&gt; &lt;td style="font-weight: bold; text-align: center; vertical-align: top; width: 108px;"&gt;&lt;a href="http://ubuntuone.com/0zfqEDbolcqdUMD2EP9Ms9" target="_blank"&gt;&lt;img alt="Ubuntu one" src="http://i679.photobucket.com/albums/vv153/edigleyg3/Icones/BLOG2012/ubuntu_one.png" style="border: 0px solid; height: 32px; width: 31px;" title="Ubuntu one" /&gt;&lt;/a&gt;&lt;br /&gt;
Ubuntu One&lt;/td&gt;&lt;td style="font-weight: bold; text-align: center; vertical-align: top; width: 108px;"&gt;&lt;a href="http://www.4shared.com/file/OAIp6zwo/Simplificao_de_fraes.html" target="_blank"&gt;&lt;img alt="4shared" src="http://i679.photobucket.com/albums/vv153/edigleyg3/Icones/BLOG2012/4shared.png" style="border: 0px solid; height: 32px; width: 34px;" title="4shared" /&gt;&lt;/a&gt;&lt;br /&gt;
4shared&lt;br /&gt;
&lt;br /&gt;&lt;/td&gt; &lt;td style="font-weight: bold; text-align: center; vertical-align: top; width: 108px;"&gt;&lt;a href="http://dl.dropbox.com/u/17283567/BLOG%20-%20planilhas/Simplifica%C3%A7%C3%A3o_de_fra%C3%A7%C3%B5es.xlsx" target="_blank"&gt;&lt;img alt="Dropbox" src="http://i679.photobucket.com/albums/vv153/edigleyg3/Icones/BLOG2012/dropbox.jpg" style="border: 0px solid; height: 32px; width: 32px;" title="Dropbox" /&gt;&lt;/a&gt;&lt;br /&gt;
Dropbox&lt;br /&gt;
&lt;br /&gt;&lt;/td&gt; &lt;td style="font-weight: bold; text-align: center; vertical-align: top; width: 108px;"&gt;&lt;a href="https://docs.google.com/open?id=0B_YnQag4regzNGMyNmVkNTAtZmZlYi00N2Y5LThiNDUtNGQzMmEyNjg4N2Ey" target="_blank"&gt;&lt;img alt="Google Docs" src="http://i679.photobucket.com/albums/vv153/edigleyg3/Icones/BLOG2012/google_docs.png" style="border: 0px solid; height: 32px; width: 32px;" title="Google Docs" /&gt;&lt;/a&gt;&lt;br /&gt;
GoogleDocs&lt;br /&gt;
&lt;br /&gt;&lt;/td&gt; &lt;td style="font-weight: bold; text-align: center; vertical-align: top; width: 108px;"&gt;&lt;a href="http://www.box.com/s/fkuie4cy0uhq449b01g0" target="_blank"&gt;&lt;img alt="Box" src="http://i679.photobucket.com/albums/vv153/edigleyg3/Icones/BLOG2012/box.png" style="border: 0px solid; height: 32px; width: 57px;" title="Box" /&gt;&lt;/a&gt;&lt;br /&gt;
Box&lt;br /&gt;
&lt;br /&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;/tbody&gt; &lt;/table&gt;
&lt;/center&gt;&lt;br /&gt;
Em breve disponibilizo a versão de todas as planilhas para o LibreOffice.&lt;br /&gt;
&lt;div&gt;
&lt;br /&gt;
&lt;br /&gt;
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&lt;/div&gt;&lt;img src="http://feeds.feedburner.com/~r/edigleyalexandre/~4/NJGd-9FRZ3E" height="1" width="1"/&gt;</description><link>http://feedproxy.google.com/~r/edigleyalexandre/~3/NJGd-9FRZ3E/simplificacao-de-fracoes-planilha-do.html</link><author>noreply@blogger.com (Edigley Alexandre)</author><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="http://3.bp.blogspot.com/-vppYHIss-aE/TyS_vkAyk3I/AAAAAAAACqg/R_FQonjygOY/s72-c/simplificacao_de_fracoes2.png" height="72" width="72" /><thr:total>0</thr:total><creativeCommons:license>http://creativecommons.org/licenses/by-nc-sa/3.0/</creativeCommons:license><feedburner:origLink>http://www.prof-edigleyalexandre.com/2012/01/simplificacao-de-fracoes-planilha-do.html</feedburner:origLink></item><item><guid isPermaLink="false">tag:blogger.com,1999:blog-125900602153146940.post-4930255592874927575</guid><pubDate>Sat, 28 Jan 2012 15:43:00 +0000</pubDate><atom:updated>2012-01-28T13:43:42.777-02:00</atom:updated><category domain="http://www.blogger.com/atom/ns#">matemática</category><category domain="http://www.blogger.com/atom/ns#">textos</category><title>Topologia: Uma resposta curta e idiossincrática</title><description>&lt;p&gt;&lt;a href="http://feedads.g.doubleclick.net/~a/zGYy1HFHvkZn7lgBZ_Ix-XHPKEA/0/da"&gt;&lt;img src="http://feedads.g.doubleclick.net/~a/zGYy1HFHvkZn7lgBZ_Ix-XHPKEA/0/di" border="0" ismap="true"&gt;&lt;/img&gt;&lt;/a&gt;&lt;br/&gt;
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Organizando meus materiais antigos da época da faculdade, estava vendo algumas apostilas e isso me fez lembrar do meu professor&amp;nbsp;de Análise Matemática&amp;nbsp;que trabalhava nessa área - Topologia. É um ramo da Matemática muito bonito, porém bastante complexo.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Segue abaixo um excelente texto que traduzi, que fala um pouco sobre essa área da Matemática de forma mais simples possível e recheado de exemplos práticos.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
--&lt;/div&gt;
&lt;div&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div&gt;
&lt;b&gt;O que é Topologia? Uma resposta curta e idiossincrática&lt;/b&gt;&lt;br /&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Basicamente, a Topologia é a versão moderna da Geometria, o estudo de todos os diferentes tipos de espaços. A única coisa que distingue os diferentes tipos de Geometria uns com os outros (incluindo Topologia aqui como uma espécie de Geometria) está nos tipos de transformações que são permitidas antes de realmente considerar que alguma coisa mudou. (Este ponto de vista foi primeiramente sugerido por Felix Klein, um famoso matemático alemão do final dos anos 1800 e início de 1900.)&lt;/div&gt;
&lt;table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"&gt;&lt;tbody&gt;
&lt;tr&gt;&lt;td style="text-align: center;"&gt;&lt;a href="http://i679.photobucket.com/albums/vv153/edigleyg3/Icones/BLOG2012/Mug_and_Torus_morph.gif" imageanchor="1" style="margin-left: auto; margin-right: auto;"&gt;&lt;img border="0" src="http://i679.photobucket.com/albums/vv153/edigleyg3/Icones/BLOG2012/Mug_and_Torus_morph.gif" /&gt;&lt;/a&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class="tr-caption" style="text-align: center;"&gt;Imagem não inclusa no artigo original [via &lt;a href="http://pt.wikipedia.org/wiki/Topologia_(matem%C3%A1tica)" target="_blank"&gt;Wikipédia&lt;/a&gt;]&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Na Geometria Euclidiana comum, você pode mover as coisas e lançá-las sobre, mas você não pode esticar ou dobrá-las. Isso é chamado de "congruência" na sala de aula de Geometria. Duas coisas são congruentes se você pode colocar um em cima do outro de tal forma que eles correspondam exatamente.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Em Geometria projetiva, inventado durante o Renascimento para entender desenho em perspectiva, duas coisas são consideradas as mesmas disposições se forem ambas as visões de um mesmo objeto. Por exemplo, olhar para um prato sobre uma mesa diretamente de cima da mesa, e olhar a placa redonda, como um círculo. Mas a poucos metros se olhar para ele, parece muito mais ampla do tempo, como uma elipse, por causa do ângulo que você está. A elipse e o círculo são projetivamente equivalente.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Esta é uma razão que é difícil aprender a desenhar. O olho e a mente trabalham projetivamente. Eles olham para esta placa elíptica sobre a mesa, e acho que é um círculo, porque eles sabem o que acontece quando você olha as coisas de um ângulo assim. Para aprender a desenhar, você tem que aprender a desenhar uma elipse, embora sua mente está dizendo 'círculo', assim você pode desenhar o que você realmente vê, em vez de 'o que você sabe que é'.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Em Topologia, qualquer mudança contínua que pode ser continuamente desfeitas é permitido. Então, um círculo é o mesmo que um triângulo ou um quadrado, porque você apenas 'puxar' as partes do círculo para fazer curvas e endireita os lados, para mudar um círculo em um quadrado. Então você só "alise-a" para ligá-lo novamente em um círculo. Estes dois processos são contínuos no sentido de que, durante cada um deles, pontos próximos no início ainda nas proximidades no final.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
O círculo não é o mesmo que um 8, porque embora você pode espremer no meio de um círculo juntos para torná-lo uma figura 8 continuamente, quando você tenta desfazê-lo, você tem que quebrar a ligação no meio e isso é descontínuo: pontos que estão todos perto do centro da final oito para cima dividido em dois lotes, em lados opostos do círculo, distantes um do outro.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Outro exemplo: um prato e uma tigela são topologicamente o mesmo, porque você pode simplesmente achatar a taça no prato. Pelo menos, isso é verdade se você usar o barro que ainda está mole. Uma vez que são disparados eles se tornam euclidianos e não topológicos, porque você não pode achatar a tigela por mais tempo sem quebrá-lo.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Topologia é quase a forma mais básica de Geometria que existe. Ele é usado em quase todos os ramos da Matemática de uma forma ou de outra. Há uma forma ainda mais básica de Geometria chamada teoria da homotopia, que é o que eu realmente estudo na maioria das vezes. Usamos para descrever a Topologia homotopia, mas na teoria de homotopia nós permitimos tantas transformações diferentes que o resultado é mais como Álgebra do que como Topologia. Esta acaba por ser conveniente, porém, porque uma vez que é uma espécie de Álgebra, você pode fazer cálculos, e realmente resolver as coisas! E, surpreendentemente, muitas coisas dependem apenas desta estrutura mais básica (tipo de homotopia), ao invés do tipo topológica do espaço, portanto, os cálculos acabam por ser bastante úteis na resolução de problemas em Geometria de muitos tipos.&lt;/div&gt;
&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;b style="text-align: -webkit-auto;"&gt;&lt;br /&gt;
&lt;/b&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;b style="text-align: -webkit-auto;"&gt;Texto original:&lt;/b&gt;&lt;span style="text-align: -webkit-auto;"&gt;&amp;nbsp;&lt;a href="http://www.math.wayne.edu/~rrb/topology.html" target="_blank"&gt;What is Topology?&lt;/a&gt; A short and idiosyncratic answer por&amp;nbsp;&lt;/span&gt;&lt;a href="http://www.math.wayne.edu/~rrb" style="text-align: -webkit-auto;" target="_blank"&gt;Robert Bruner&lt;/a&gt; &lt;/div&gt;
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&lt;b&gt;Árvore evolutiva.&lt;/b&gt;&lt;br /&gt;
&lt;i&gt;Com Matemática e sem Matemática.&lt;/i&gt;&lt;br /&gt;
&lt;br /&gt;
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Cada indivíduo estuda e analisa a posição que acredita. Achei a imagem muito engraçada e resolvi compartilhá-la aqui. Pra ser sincero, nem pensei na teoria evolutiva ao ver a imagem, mas sim na pergunta: o que seria &amp;nbsp;do mundo moderno sem a Matemática? (minhas respostas não cabem aqui)&lt;/div&gt;
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&lt;br /&gt;
Vi essa imagem &lt;a href="http://www.thebestpageintheuniverse.net/c.cgi?u=math/" target="_blank"&gt;aqui&lt;/a&gt;.&lt;br /&gt;
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&lt;b style="font-weight: bold;"&gt;&lt;span style="font-size: large;"&gt;Curta o blog no &lt;span style="color: #0b5394;"&gt;Facebook&lt;/span&gt;! &lt;/span&gt;&lt;/b&gt;&lt;span style="color: #444444; font-size: large;"&gt;Tem conteúdo exclusivo por lá.&lt;/span&gt;&lt;/div&gt;
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Eis a quarta lista de &lt;a href="http://www.prof-edigleyalexandre.com/search/label/links%20matem%C3%A1ticos" target="_blank"&gt;links matemáticos&lt;/a&gt; com imagens, vídeos e&amp;nbsp;artigos em blogs/sites&amp;nbsp;que li durante essa semana. Mesmo tendo curtido minhas férias longe do meu QG (meu quarto), continuo acompanhando muita coisa legal na internet, sou viciado nisso (rsrs). Espero que gostem dos links.&lt;br /&gt;
&lt;br /&gt;
Três imagens com um pouco de humor para começar...&lt;/div&gt;
&lt;br /&gt;
&lt;b&gt;&lt;span style="font-size: large;"&gt;Imagens&lt;/span&gt;&lt;/b&gt;&lt;br /&gt;
Nem precisa tradução...&lt;table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"&gt;&lt;tbody&gt;
&lt;tr&gt;&lt;td style="text-align: center;"&gt;&lt;a href="http://4.bp.blogspot.com/-KPXrZnSoNxo/TyLNwx0dlVI/AAAAAAAACpY/AM_9vj65Zec/s1600/A+diferen%C3%A7a.gif" imageanchor="1" style="margin-left: auto; margin-right: auto;"&gt;&lt;img border="0" src="http://4.bp.blogspot.com/-KPXrZnSoNxo/TyLNwx0dlVI/AAAAAAAACpY/AM_9vj65Zec/s1600/A+diferen%C3%A7a.gif" /&gt;&lt;/a&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class="tr-caption" style="text-align: center;"&gt;A diferença via &lt;a href="http://threesixty360.wordpress.com/2011/04/09/the-difference/" target="_blank"&gt;360&lt;/a&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
&lt;table cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"&gt;&lt;tbody&gt;
&lt;tr&gt;&lt;td style="text-align: center;"&gt;&lt;br /&gt;
&lt;a href="http://3.bp.blogspot.com/-hyb_A539GoQ/TyBFn97gwKI/AAAAAAAACnc/7bGk8CDlNd8/s1600/gandolf.jpg" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"&gt;&lt;img border="0" src="http://3.bp.blogspot.com/-hyb_A539GoQ/TyBFn97gwKI/AAAAAAAACnc/7bGk8CDlNd8/s1600/gandolf.jpg" /&gt;&lt;/a&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class="tr-caption" style="text-align: center;"&gt;Via &lt;a href="http://math-fail.com/2010/01/lord-of-the-rings-math.html" target="_blank"&gt;MathFail&lt;/a&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
&lt;div class="separator" style="clear: both; text-align: center;"&gt;
&lt;/div&gt;
&lt;br /&gt;
&lt;table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"&gt;&lt;tbody&gt;
&lt;tr&gt;&lt;td style="text-align: center;"&gt;&lt;a href="http://3.bp.blogspot.com/-zrM8FfTG8Qo/TyBGkduT9lI/AAAAAAAACnk/pP548xewvk4/s1600/qual+o+objetivo+dessa+imagem.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"&gt;&lt;img border="0" src="http://3.bp.blogspot.com/-zrM8FfTG8Qo/TyBGkduT9lI/AAAAAAAACnk/pP548xewvk4/s1600/qual+o+objetivo+dessa+imagem.jpg" /&gt;&lt;/a&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class="tr-caption" style="text-align: center;"&gt;Qual o objetivo desse probleminha? Via &lt;a href="http://themathkid.tumblr.com/post/16440864752" target="_blank"&gt;The Math Kid&lt;/a&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
&lt;b&gt;&lt;span style="font-size: large;"&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/b&gt;&lt;br /&gt;
&lt;b&gt;&lt;span style="font-size: large;"&gt;7 Artigos&lt;/span&gt;&lt;/b&gt;&lt;br /&gt;
Blog "Math for love" -&amp;nbsp;&lt;a href="http://mathforlove.com/2011/04/what-math-curriculum-actually-works/" target="_blank"&gt;O currículo de matemática realmente funciona?&lt;/a&gt;&amp;nbsp;(texto em inglês)&lt;br /&gt;
&lt;blockquote class="tr_bq" style="text-align: justify;"&gt;
Lendo as opiniões de vários currículos de Matemática, vejo o quão difícil pode ser para avaliar os pontos fortes e fracos de um livro de matemática. Quando alguém me diz que o livro de Matemática da minha escola é "ruim", devo acreditar neles?&lt;/blockquote&gt;
&lt;br /&gt;
Blog "Math blog" -&amp;nbsp;&lt;a href="http://math-blog.com/2011/12/16/interesting-mathematics-books-2011/" target="_blank"&gt;Uma grande lista de livros interessantes de Matemática lançados em 2011&lt;/a&gt;&amp;nbsp;(texto em inglês)
&lt;br /&gt;
&lt;blockquote class="tr_bq" style="text-align: justify;"&gt;
Lista de 46 livros interessantes de matemática que foram lançados em 2011.&amp;nbsp;Os livros são ordenados por sua posição atual para venda na Amazon (do mais popular ao menos popular no momento, com capa dura em primeiro lugar). Espero que esta página ajudará você a descobrir alguns títulos você pode não ter notado ainda.&lt;/blockquote&gt;
&lt;br /&gt;
Blog "O baricentro da mente" - &lt;a href="http://obaricentrodamente.blogspot.com/2012/01/2012-ano-bissexto.html" target="_blank"&gt;2012: Ano Bissexto&lt;/a&gt; &lt;br /&gt;
&lt;blockquote class="tr_bq" style="text-align: justify;"&gt;
Em 2012, o mês de fevereiro terá 29 dias. Para uma criança que venha a nascer em 29 de fevereiro de 2012, em 2020 terá 8 anos e esta poderá dizer para seu colegas na escola: “na verdade, eu só tenho 2 anos!”. A regra para o ano bissexto é complicada mesmo: todo ano bissexto é divisível por 4, exceto...&lt;/blockquote&gt;
&lt;br /&gt;
Blog "Manthanos" -&amp;nbsp;&lt;a href="http://manthanos.blogspot.com/2012/01/premio-wolf-de-matematica-2012.html" target="_blank"&gt;Prêmio Wolf de Matemática 2012&lt;/a&gt; &lt;br /&gt;
&lt;blockquote class="tr_bq" style="text-align: justify;"&gt;
O Prêmio Wolf é um prêmio anual estabelecido desde 1978, destinado a cientistas e artistas vivos, concedido por "conquistas visando o interesse da humanidade e relações amigáveis entre povos, independente de nacionalidade, raça, cor, religião, sexo ou política".&lt;/blockquote&gt;
&lt;br /&gt;
Blog "Fichário de Matemática" -&amp;nbsp;&lt;a href="http://www.fichariodematematica.com/2012/01/professor-de-matematica-conecte-suas.html" target="_blank"&gt;Professor de Matemática: Conecte suas ideias!&lt;/a&gt; &lt;br /&gt;
&lt;blockquote class="tr_bq" style="text-align: justify;"&gt;
William Timothy Gowers é um matemático britânico que ganhou em 1998 a Medalha Fields. E em 2009 surpreendeu a todos em seu blog quando lançou o seguinte questionamento traduzido para o português mais ou menos da seguinte maneira: É possível fazer Matemática de forma colaborativa?&lt;/blockquote&gt;
&lt;br /&gt;
Blog "Matemática mundial" -&amp;nbsp;&lt;a href="http://matematicamundial.blogspot.com/2011/05/matematica-desvenda-papai-noel.html" target="_blank"&gt;Matemática desvenda Papai Noel&lt;/a&gt;&lt;br /&gt;
&lt;blockquote class="tr_bq" style="text-align: justify;"&gt;
Papai Noel trabalharia 31 horas (De Leste a Oeste).&amp;nbsp;Portanto teria que visitar= 91.800.000/1860 min.= 822,6 casas/segundo. Então cada visita teria que demorar aproximadamente 0,0001 segundo.&amp;nbsp;Média de distância entre cada casa no mundo = 1,25km.&amp;nbsp;Distância total = 1,25 x 91.800.000 = 120.000.000 Km de viagem...&lt;/blockquote&gt;
&lt;br /&gt;
Blog "Prof. Edigley Alexandre" -&amp;nbsp;&lt;a href="http://www.prof-edigleyalexandre.com/2012/01/os-melhores-aplicativos-matematicos.html" target="_blank"&gt;Os melhores aplicativos matemáticos para Android&lt;/a&gt;&lt;br /&gt;
&lt;blockquote class="tr_bq" style="text-align: justify;"&gt;
Neste post destaco alguns apps (aplicativos) bem legais para você baixar gratuitamente independente do seu dispositivo, mas rodando o Android 2.2 ou superior. Não estou passando essas dicas simplesmente por passar, testei cada um dos aplicativos e recomendo.&lt;/blockquote&gt;
&lt;br /&gt;
&lt;b&gt;&lt;span style="font-size: large;"&gt;3 Vídeos&lt;/span&gt;&lt;/b&gt;&lt;br /&gt;
Resolvendo o cubo mágico em 6,45 segundos (verdadeiro ou falso?)&lt;br /&gt;
&lt;embed allowfullscreen="true" allowscriptaccess="always" flashvars="" height="410" name="Metacafe_548176" pluginspage="http://www.macromedia.com/go/getflashplayer" src="http://www.metacafe.com/fplayer/548176/amazage_solve_rubicks_cube_in_6_45_sec.swf" type="application/x-shockwave-flash" width="640" wmode="transparent"&gt;&lt;/embed&gt;&lt;br /&gt;
[Vídeo incorporado de &lt;a href="http://www.metacafe.com/watch/548176/amazage_solve_rubicks_cube_in_6_45_sec/"&gt;metacafe.com&lt;/a&gt;]&lt;br /&gt;
&lt;div&gt;
&lt;br /&gt;
&lt;iframe allowfullscreen="" frameborder="0" height="360" src="http://www.youtube.com/embed/z6lL83wl31E?feature=player_embedded" width="640"&gt;&lt;/iframe&gt;&lt;br /&gt;
[Vídeo incorporado de&amp;nbsp;&lt;a href="http://www.youtube.com/user/Vihart" target="_blank"&gt;youtube.com/user/Vihart&lt;/a&gt;]&lt;br /&gt;
&lt;br /&gt;
&lt;iframe allowfullscreen="" frameborder="0" height="360" src="http://www.youtube.com/embed/G9XFWhlEZLs?feature=player_embedded" width="640"&gt;&lt;/iframe&gt;&lt;br /&gt;
[Vídeo incorporado de&amp;nbsp;&lt;a href="http://www.youtube.com/user/revistanovaescola" target="_blank"&gt;youtube.com/user/revistanovaescola&lt;/a&gt;]&lt;br /&gt;
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O dia do meu nascimento é um número lindo.&lt;br /&gt;
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Detesto numerologia, astrologia, essas coisas que fazem com os astros cósmicos, com os números, etc., mas adoro combinações matemáticas precisas que nos induzem a curiosidade e ao raciocínio lógico.&amp;nbsp;&lt;/div&gt;
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&lt;br /&gt;&lt;/div&gt;
&lt;blockquote class="tr_bq"&gt;
O número 23 pode ser escrito de maneira única como soma de quatro quadrados (23 = 1² + 2² + 3² + 3²); fatorial de 23 possui 23 dígitos na base decimal (23! = 25852016738884976640000)... [&lt;a href="http://manthanos.blogspot.com/2012/01/sobre-o-numero-23.html" target="_blank"&gt;Blog Manthano&lt;/a&gt;]&lt;/blockquote&gt;
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&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
O&amp;nbsp;Pedro Roberto, do blog &lt;b&gt;Manthano&lt;/b&gt; fez uma lista de curiosidades a respeito do número 23. As duas primeiras citei acima, vejas as demais curiosidades &lt;a href="http://manthanos.blogspot.com/2012/01/sobre-o-numero-23.html" target="_blank"&gt;clicando aqui&lt;/a&gt;.&lt;br /&gt;
&lt;br /&gt;
Assista o trailer do filme &lt;b&gt;Número 23&lt;/b&gt; (com Jim Carrey), já assisti o filme e gostei muito.&lt;/div&gt;
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[Vídeo incorporado de&amp;nbsp;&lt;a href="http://www.youtube.com/user/CineFlip" target="_blank"&gt;youtube.com/user/CineFlip&lt;/a&gt;]&lt;/div&gt;
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É um site que propõe um desafio bem simples. &lt;b&gt;Quem ficar com a última maçã (vermelha) perde&lt;/b&gt;. O desafio é entre o visitante e o computador. O joguinho precisa apenas do mouse. Passando o cursor do mouse pode-se escolher a quantidade de maças verdes que deseja-se retirar, cada vez que tirar uma maça o computador retira também.&amp;nbsp;&lt;/div&gt;
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Simples, nem precisa explicações rsrs... Será que você consegue?&lt;/div&gt;
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Acesse&amp;nbsp;&lt;a href="http://www.philipbrocoum.com/munch/"&gt;www.philipbrocoum.com/munch&lt;/a&gt; e tente vencer o computador.&lt;/div&gt;
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O jogo foi criado por &lt;a href="http://www.philipbrocoum.com/" target="_blank"&gt;Philip Brocoum&lt;/a&gt;. Site desenvolvido com &lt;a href="http://www.jquery.com/" target="_blank"&gt;jQuery&lt;/a&gt;&amp;nbsp;e&amp;nbsp;usando linguagem de programação&amp;nbsp;&lt;a href="http://pt.wikipedia.org/wiki/Ruby_(linguagem_de_programa%C3%A7%C3%A3o)" target="_blank"&gt;Ruby&lt;/a&gt;.&lt;br /&gt;
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A figura abaixo mostra um conjunto de 10 números. Cinco números são selecionados a partir do conjunto e somados.&amp;nbsp;Os cinco números restantes também são adicionados. Estas duas somas são então multiplicadas.&amp;nbsp;&lt;b&gt;Encontre o produto máximo possível da multiplicação&lt;/b&gt;.&lt;/div&gt;
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Há 150 anos nascia&amp;nbsp;&lt;b&gt;David Hilbert&lt;/b&gt;.&lt;br /&gt;
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&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Nasceu em &lt;b&gt;23 de janeiro de 1862&lt;/b&gt; em Königsberg, na Prússia (hoje Kaliningrad, Rússia).&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Morreu em &lt;b&gt;14 de fevereiro de 1943&lt;/b&gt; em Göttingen, Alemanha.&lt;/div&gt;
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&lt;br /&gt;&lt;/div&gt;
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Seu trabalho em Geometria teve a maior influência nessa área depois de Euclides. Um estudo sistemático dos axiomas da Geometria Euclidiana levou Hilbert a propor tais 21 axiomas e ele analisou seus significados. Ele fez contribuições em muitas áreas da Matemática e da Física.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
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Leia sua excelente biografia presente no &lt;a href="http://www.google.com/translate?sl=en&amp;amp;tl=pt&amp;amp;u=http%3A%2F%2Fwww-groups.dcs.st-and.ac.uk%2F~history%2FBiographies%2FHilbert.html" target="_blank"&gt;MacTutor&lt;/a&gt;.&lt;/div&gt;
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&lt;tr&gt; &lt;td style="vertical-align: top;"&gt;&lt;img alt="" src="http://www-groups.dcs.st-and.ac.uk/%7Ehistory/BigPictures/Hilbert_9.jpeg" style="height: 243px; width: 200px;" /&gt;&lt;/td&gt; &lt;td style="vertical-align: top;"&gt;&lt;img alt="" src="http://www-groups.dcs.st-and.ac.uk/%7Ehistory/BigPictures/Hilbert_1886.jpeg" style="height: 243px; width: 200px;" /&gt;&lt;/td&gt; &lt;td style="vertical-align: top;"&gt;&lt;img alt="" src="http://www-groups.dcs.st-and.ac.uk/%7Ehistory/BigPictures/Hilbert_1910.jpeg" style="height: 243px; width: 200px;" /&gt;&lt;/td&gt; &lt;/tr&gt;
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&lt;center&gt;&lt;br /&gt;&lt;/center&gt;&lt;center&gt;&lt;br /&gt;&lt;/center&gt;&lt;center&gt;
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Uma paródia bem animada da música&amp;nbsp;"&lt;a href="http://www.google.com.br/search?sourceid=chrome&amp;amp;ie=UTF-8&amp;amp;q=Total+Eclipse+of+the+Heart" target="_blank"&gt;Total Eclipse of the Heart&lt;/a&gt;" feita por supostos (tem outra hipótese? rsrs) estudantes de Cálculo Diferencial e Integral. O vídeo tem suporte a legendas própria do youtube, não é tão fiel, mas dá para acompanhar.&lt;/div&gt;
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&lt;br /&gt;&lt;/div&gt;
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&lt;br /&gt;&lt;/div&gt;
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Se você estuda ou já estudou Cálculo, vai se divertir assistindo esse vídeo.&lt;/div&gt;
&lt;br /&gt;
&lt;iframe allowfullscreen="" frameborder="0" height="360" src="http://www.youtube.com/embed/-reFBJ4R9iA?feature=player_embedded" width="640"&gt;&lt;/iframe&gt;&lt;br /&gt;
[Vídeo incorporado de&amp;nbsp;&lt;a href="http://www.youtube.com/user/aquapirate11?feature=watch" target="_blank"&gt;youtube.com/user/aquapirate11&lt;/a&gt;]&lt;br /&gt;
&lt;br /&gt;
Assista também&amp;nbsp;&lt;a href="http://www.prof-edigleyalexandre.com/2011/10/eu-vou-derivar.html" target="_blank"&gt;Eu vou derivar&lt;/a&gt;,&amp;nbsp;outra paródia bem engraçada sobre Cálculo.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
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Revirando alguns arquivos antigos no meu HD externo, encontrei uma apresentação em powerpoint que editei para um amigo professor de Matemática, que usaria em uma palestra. O slide carrega um pouco de humor, porém não lembro-me bem qual a mensagem o amigo professor iria passar para seus alunos.&lt;br /&gt;
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O que acham?&lt;br /&gt;
&lt;br /&gt;
Veja o slide.&lt;/div&gt;
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Veja outras apresentações em&amp;nbsp;&lt;a href="http://www.slideshare.net/edigleyg3/o-problema-de-timmy" target="_blank"&gt;slideshare.net/edigleyg3&lt;/a&gt;&lt;/div&gt;
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Você já ouviu falar sobre o Princípio de &lt;a href="http://fatosmatematicos.blogspot.com/2011/02/jean-b-j-fourier.html" target="_blank"&gt;Fourier&lt;/a&gt;?&lt;br /&gt;
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&lt;br /&gt;
O princípio de Joseph Fourier enuncia que um sinal complexo pode ser desdobrado em sinais componentes mais simples para ser processado ou transmitido. Se tivermos uma música tocada por uma banda, por exemplo, pode ser mais fácil transmitir a melodia de cada instrumento de cada vez e voltar a juntar tudo na parte recetora.&lt;/div&gt;
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&lt;br /&gt;&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
Agora, um grupo do MIT propõe uma alteração ao principio que estaria a ser aplicado e que se revela ineficiente. De acordo com os investigadores, um pedaço de informação constituído por 8x8 blocos (64 no total) leva 57 pedaços que podem ser descartados, sem alterações visíveis no produto final.&lt;/div&gt;
&lt;div style="text-align: justify;"&gt;
&lt;br /&gt;&lt;/div&gt;
&lt;div&gt;
[Leia mais em: &lt;a href="http://aeiou.exameinformatica.pt/noticias/ciencia/2012/01/19/alteracao-em-principio-matematico-pode-melhorar-imagens-e-video" target="_blank"&gt;aeiou.exameinformatica.pt&lt;/a&gt;]&lt;br /&gt;
&lt;br /&gt;
&lt;b&gt;Leitura complementar&lt;/b&gt;&lt;br /&gt;
&lt;blockquote class="tr_bq" style="text-align: justify;"&gt;
Quem aí já teve a (in)felicidade de estudar Cálculo, vai lembrar das séries de Fourier.&amp;nbsp;Você tem uma função &amp;nbsp;matemática qualquer, e quando você faz a transformada de Fourier, você transforma essa função original em diversas componentes senóides que somadas, retornam à função original. Existem componentes de frequências mais baixas, e componentes de frequências mais altas.&amp;nbsp;O que se faz ao compactar áudio para mp3, é um processo chamado DCT (discrete cosine transform) que é uma das variações da transformada deFourier. Então, dependendo da qualidade escolhida para o mp3, serão descartadas as componentes de frequência mais alta. [Leia mais em&amp;nbsp;&lt;a href="http://www.hardware.com.br/comunidade/placebo-mitos/1125457/" target="_blank"&gt;www.hardware.com.br&lt;/a&gt;]&lt;/blockquote&gt;
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&lt;li&gt;&lt;a href="http://www.prof-edigleyalexandre.com/2011/04/e-du-cassao-humor.html"&gt;&amp;Eacute; du cass&amp;atilde;o [humor] ~ Prof. Edigley Alexandre&lt;/a&gt;&lt;/li&gt;
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