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	<title>Comments on: Evaluemos la integral</title>
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	<description>Porque todo tiende a infinito...</description>
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	<item>
		<title>By: Américo Tavares</title>
		<link>http://gaussianos.com/evaluemos-la-integral/#comment-11195</link>
		<dc:creator>Américo Tavares</dc:creator>
		<pubDate>Sat, 06 Mar 2010 19:57:28 +0000</pubDate>
		<guid isPermaLink="false">http://gaussianos.com/?p=1420#comment-11195</guid>
		<description>&lt;strong&gt;&lt;a href=&quot;http://problemasteoremas.wordpress.com/2010/03/06/problema-do-mes-problem-of-the-month-4/&quot; rel=&quot;nofollow&quot;&gt;Problema&lt;/a&gt;&lt;/strong&gt;: Prove ou infirme: $latex \pi =\displaystyle\int_{0}^{\infty }\dfrac{\cos x-\cos 3x}{x^{2}}dx$</description>
		<content:encoded><![CDATA[<p><strong><a href="http://problemasteoremas.wordpress.com/2010/03/06/problema-do-mes-problem-of-the-month-4/" rel="nofollow">Problema</a></strong>: Prove ou infirme: <img src='http://s.wordpress.com/latex.php?latex=%5Cpi%20%3D%5Cdisplaystyle%5Cint_%7B0%7D%5E%7B%5Cinfty%20%7D%5Cdfrac%7B%5Ccos%20x-%5Ccos%203x%7D%7Bx%5E%7B2%7D%7Ddx&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\pi =\displaystyle\int_{0}^{\infty }\dfrac{\cos x-\cos 3x}{x^{2}}dx' title='\pi =\displaystyle\int_{0}^{\infty }\dfrac{\cos x-\cos 3x}{x^{2}}dx' class='latex' /></p>
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	</item>
	<item>
		<title>By: Américo Tavares</title>
		<link>http://gaussianos.com/evaluemos-la-integral/#comment-11194</link>
		<dc:creator>Américo Tavares</dc:creator>
		<pubDate>Thu, 04 Mar 2010 12:19:34 +0000</pubDate>
		<guid isPermaLink="false">http://gaussianos.com/?p=1420#comment-11194</guid>
		<description>josejuan

Muito obrigado pela sua resposta.

A minha dúvida estava relacionada com os gráficos das duas funções integrandas que são muito diferentes.

Você exprimiu o integral em termos do Seno Integral.

- - -

&lt;i&gt;Meus cálculos auxiliares&lt;/i&gt; (&lt;i&gt;para explicitar os limites que indica&lt;/i&gt;):

1.

$latex \left. \dfrac{2x\func{Si}\left( 2x\right) +\cos \left( 2x\right) -1}{2x}\right\vert _{0}^{\infty }$

$latex =\underset{x\rightarrow \infty }{\lim }\dfrac{2x\func{Si}\left( 2x\right) +\cos \left( 2x\right) -1}{2x}-\underset{x\rightarrow 0}{\lim }\dfrac{2x\func{Si}\left( 2x\right) +\cos \left( 2x\right) -1}{2x}$

$latex =\underset{x\rightarrow \infty }{\lim }\dfrac{2x\func{Si}\left( 2x\right) }{2x}+\underset{x\rightarrow \infty }{\lim }\dfrac{\cos \left( 2x\right) }{2x}-\underset{x\rightarrow \infty }{\lim }\dfrac{1}{2x}$
$latex -\underset{x\rightarrow 0}{\lim }\dfrac{2x\func{Si}\left( 2x\right) }{2x}-\underset{x\rightarrow 0}{\lim }\dfrac{\cos \left( 2x\right) }{2x}+\underset{x\rightarrow 0}{\lim }\dfrac{1}{2x}$




$latex =\underset{x\rightarrow \infty }{\lim }\func{Si}\left( 2x\right) +0-0-\underset{x\rightarrow 0}{\lim }\func{Si}\left( 2x\right) -0+0$

$latex =\underset{x\rightarrow \infty }{\lim }\func{Si}\left( 2x\right) -\underset{x\rightarrow 0}{\lim }\func{Si}\left( 2x\right) $

2.

$latex \left. \func{Si}\left( x\right) \right\vert _{0}^{\infty }=\underset{x\rightarrow \infty }{\lim }\func{Si}\left( x\right) -\underset{x\rightarrow 0}{\lim }\func{Si}\left( x\right) $

3.

$latex \underset{x\rightarrow \infty }{\lim }\func{Si}\left( 2x\right) =\underset{x\rightarrow \infty }{\lim }\func{Si}\left( x\right) $

$latex \underset{x\rightarrow 0}{\lim }\func{Si}\left( x\right) =\underset{x\rightarrow 0}{\lim }\func{Si}\left( x\right) $

4.

Efectivamente

$latex \left. \dfrac{2x\func{Si}\left( 2x\right) +\cos \left( 2x\right) -1}{2x}\right\vert _{0}^{\infty }=\left. \func{Si}\left( x\right) \right\vert_{0}^{\infty }$

- - -

O primeiro integral pode ser calculado pelo método dos resíduos e o segundo pela transformada de Laplace.

Eu publiquei, na última entrada do meu blog, o segundo, que foi calculado por um leitor meu pelas transformadas de Laplace. Quanto ao primeiro, vi em dois livros diferentes de Análise Complexa a aplicação do método/técnica dos resíduos das funções complexas a este integral real.</description>
		<content:encoded><![CDATA[<p>josejuan</p>
<p>Muito obrigado pela sua resposta.</p>
<p>A minha dúvida estava relacionada com os gráficos das duas funções integrandas que são muito diferentes.</p>
<p>Você exprimiu o integral em termos do Seno Integral.</p>
<p>- &#8211; -</p>
<p><i>Meus cálculos auxiliares</i> (<i>para explicitar os limites que indica</i>):</p>
<p>1.</p>
<p><img src='http://s.wordpress.com/latex.php?latex=%5Cleft.%20%5Cdfrac%7B2x%5Cfunc%7BSi%7D%5Cleft%28%202x%5Cright%29%20%2B%5Ccos%20%5Cleft%28%202x%5Cright%29%20-1%7D%7B2x%7D%5Cright%5Cvert%20_%7B0%7D%5E%7B%5Cinfty%20%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\left. \dfrac{2x\func{Si}\left( 2x\right) +\cos \left( 2x\right) -1}{2x}\right\vert _{0}^{\infty }' title='\left. \dfrac{2x\func{Si}\left( 2x\right) +\cos \left( 2x\right) -1}{2x}\right\vert _{0}^{\infty }' class='latex' /></p>
<p><img src='http://s.wordpress.com/latex.php?latex=%3D%5Cunderset%7Bx%5Crightarrow%20%5Cinfty%20%7D%7B%5Clim%20%7D%5Cdfrac%7B2x%5Cfunc%7BSi%7D%5Cleft%28%202x%5Cright%29%20%2B%5Ccos%20%5Cleft%28%202x%5Cright%29%20-1%7D%7B2x%7D-%5Cunderset%7Bx%5Crightarrow%200%7D%7B%5Clim%20%7D%5Cdfrac%7B2x%5Cfunc%7BSi%7D%5Cleft%28%202x%5Cright%29%20%2B%5Ccos%20%5Cleft%28%202x%5Cright%29%20-1%7D%7B2x%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='=\underset{x\rightarrow \infty }{\lim }\dfrac{2x\func{Si}\left( 2x\right) +\cos \left( 2x\right) -1}{2x}-\underset{x\rightarrow 0}{\lim }\dfrac{2x\func{Si}\left( 2x\right) +\cos \left( 2x\right) -1}{2x}' title='=\underset{x\rightarrow \infty }{\lim }\dfrac{2x\func{Si}\left( 2x\right) +\cos \left( 2x\right) -1}{2x}-\underset{x\rightarrow 0}{\lim }\dfrac{2x\func{Si}\left( 2x\right) +\cos \left( 2x\right) -1}{2x}' class='latex' /></p>
<p><img src='http://s.wordpress.com/latex.php?latex=%3D%5Cunderset%7Bx%5Crightarrow%20%5Cinfty%20%7D%7B%5Clim%20%7D%5Cdfrac%7B2x%5Cfunc%7BSi%7D%5Cleft%28%202x%5Cright%29%20%7D%7B2x%7D%2B%5Cunderset%7Bx%5Crightarrow%20%5Cinfty%20%7D%7B%5Clim%20%7D%5Cdfrac%7B%5Ccos%20%5Cleft%28%202x%5Cright%29%20%7D%7B2x%7D-%5Cunderset%7Bx%5Crightarrow%20%5Cinfty%20%7D%7B%5Clim%20%7D%5Cdfrac%7B1%7D%7B2x%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='=\underset{x\rightarrow \infty }{\lim }\dfrac{2x\func{Si}\left( 2x\right) }{2x}+\underset{x\rightarrow \infty }{\lim }\dfrac{\cos \left( 2x\right) }{2x}-\underset{x\rightarrow \infty }{\lim }\dfrac{1}{2x}' title='=\underset{x\rightarrow \infty }{\lim }\dfrac{2x\func{Si}\left( 2x\right) }{2x}+\underset{x\rightarrow \infty }{\lim }\dfrac{\cos \left( 2x\right) }{2x}-\underset{x\rightarrow \infty }{\lim }\dfrac{1}{2x}' class='latex' /><br />
<img src='http://s.wordpress.com/latex.php?latex=-%5Cunderset%7Bx%5Crightarrow%200%7D%7B%5Clim%20%7D%5Cdfrac%7B2x%5Cfunc%7BSi%7D%5Cleft%28%202x%5Cright%29%20%7D%7B2x%7D-%5Cunderset%7Bx%5Crightarrow%200%7D%7B%5Clim%20%7D%5Cdfrac%7B%5Ccos%20%5Cleft%28%202x%5Cright%29%20%7D%7B2x%7D%2B%5Cunderset%7Bx%5Crightarrow%200%7D%7B%5Clim%20%7D%5Cdfrac%7B1%7D%7B2x%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='-\underset{x\rightarrow 0}{\lim }\dfrac{2x\func{Si}\left( 2x\right) }{2x}-\underset{x\rightarrow 0}{\lim }\dfrac{\cos \left( 2x\right) }{2x}+\underset{x\rightarrow 0}{\lim }\dfrac{1}{2x}' title='-\underset{x\rightarrow 0}{\lim }\dfrac{2x\func{Si}\left( 2x\right) }{2x}-\underset{x\rightarrow 0}{\lim }\dfrac{\cos \left( 2x\right) }{2x}+\underset{x\rightarrow 0}{\lim }\dfrac{1}{2x}' class='latex' /></p>
<p><img src='http://s.wordpress.com/latex.php?latex=%3D%5Cunderset%7Bx%5Crightarrow%20%5Cinfty%20%7D%7B%5Clim%20%7D%5Cfunc%7BSi%7D%5Cleft%28%202x%5Cright%29%20%2B0-0-%5Cunderset%7Bx%5Crightarrow%200%7D%7B%5Clim%20%7D%5Cfunc%7BSi%7D%5Cleft%28%202x%5Cright%29%20-0%2B0&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='=\underset{x\rightarrow \infty }{\lim }\func{Si}\left( 2x\right) +0-0-\underset{x\rightarrow 0}{\lim }\func{Si}\left( 2x\right) -0+0' title='=\underset{x\rightarrow \infty }{\lim }\func{Si}\left( 2x\right) +0-0-\underset{x\rightarrow 0}{\lim }\func{Si}\left( 2x\right) -0+0' class='latex' /></p>
<p><img src='http://s.wordpress.com/latex.php?latex=%3D%5Cunderset%7Bx%5Crightarrow%20%5Cinfty%20%7D%7B%5Clim%20%7D%5Cfunc%7BSi%7D%5Cleft%28%202x%5Cright%29%20-%5Cunderset%7Bx%5Crightarrow%200%7D%7B%5Clim%20%7D%5Cfunc%7BSi%7D%5Cleft%28%202x%5Cright%29%20&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='=\underset{x\rightarrow \infty }{\lim }\func{Si}\left( 2x\right) -\underset{x\rightarrow 0}{\lim }\func{Si}\left( 2x\right) ' title='=\underset{x\rightarrow \infty }{\lim }\func{Si}\left( 2x\right) -\underset{x\rightarrow 0}{\lim }\func{Si}\left( 2x\right) ' class='latex' /></p>
<p>2.</p>
<p><img src='http://s.wordpress.com/latex.php?latex=%5Cleft.%20%5Cfunc%7BSi%7D%5Cleft%28%20x%5Cright%29%20%5Cright%5Cvert%20_%7B0%7D%5E%7B%5Cinfty%20%7D%3D%5Cunderset%7Bx%5Crightarrow%20%5Cinfty%20%7D%7B%5Clim%20%7D%5Cfunc%7BSi%7D%5Cleft%28%20x%5Cright%29%20-%5Cunderset%7Bx%5Crightarrow%200%7D%7B%5Clim%20%7D%5Cfunc%7BSi%7D%5Cleft%28%20x%5Cright%29%20&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\left. \func{Si}\left( x\right) \right\vert _{0}^{\infty }=\underset{x\rightarrow \infty }{\lim }\func{Si}\left( x\right) -\underset{x\rightarrow 0}{\lim }\func{Si}\left( x\right) ' title='\left. \func{Si}\left( x\right) \right\vert _{0}^{\infty }=\underset{x\rightarrow \infty }{\lim }\func{Si}\left( x\right) -\underset{x\rightarrow 0}{\lim }\func{Si}\left( x\right) ' class='latex' /></p>
<p>3.</p>
<p><img src='http://s.wordpress.com/latex.php?latex=%5Cunderset%7Bx%5Crightarrow%20%5Cinfty%20%7D%7B%5Clim%20%7D%5Cfunc%7BSi%7D%5Cleft%28%202x%5Cright%29%20%3D%5Cunderset%7Bx%5Crightarrow%20%5Cinfty%20%7D%7B%5Clim%20%7D%5Cfunc%7BSi%7D%5Cleft%28%20x%5Cright%29%20&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\underset{x\rightarrow \infty }{\lim }\func{Si}\left( 2x\right) =\underset{x\rightarrow \infty }{\lim }\func{Si}\left( x\right) ' title='\underset{x\rightarrow \infty }{\lim }\func{Si}\left( 2x\right) =\underset{x\rightarrow \infty }{\lim }\func{Si}\left( x\right) ' class='latex' /></p>
<p><img src='http://s.wordpress.com/latex.php?latex=%5Cunderset%7Bx%5Crightarrow%200%7D%7B%5Clim%20%7D%5Cfunc%7BSi%7D%5Cleft%28%20x%5Cright%29%20%3D%5Cunderset%7Bx%5Crightarrow%200%7D%7B%5Clim%20%7D%5Cfunc%7BSi%7D%5Cleft%28%20x%5Cright%29%20&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\underset{x\rightarrow 0}{\lim }\func{Si}\left( x\right) =\underset{x\rightarrow 0}{\lim }\func{Si}\left( x\right) ' title='\underset{x\rightarrow 0}{\lim }\func{Si}\left( x\right) =\underset{x\rightarrow 0}{\lim }\func{Si}\left( x\right) ' class='latex' /></p>
<p>4.</p>
<p>Efectivamente</p>
<p><img src='http://s.wordpress.com/latex.php?latex=%5Cleft.%20%5Cdfrac%7B2x%5Cfunc%7BSi%7D%5Cleft%28%202x%5Cright%29%20%2B%5Ccos%20%5Cleft%28%202x%5Cright%29%20-1%7D%7B2x%7D%5Cright%5Cvert%20_%7B0%7D%5E%7B%5Cinfty%20%7D%3D%5Cleft.%20%5Cfunc%7BSi%7D%5Cleft%28%20x%5Cright%29%20%5Cright%5Cvert_%7B0%7D%5E%7B%5Cinfty%20%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\left. \dfrac{2x\func{Si}\left( 2x\right) +\cos \left( 2x\right) -1}{2x}\right\vert _{0}^{\infty }=\left. \func{Si}\left( x\right) \right\vert_{0}^{\infty }' title='\left. \dfrac{2x\func{Si}\left( 2x\right) +\cos \left( 2x\right) -1}{2x}\right\vert _{0}^{\infty }=\left. \func{Si}\left( x\right) \right\vert_{0}^{\infty }' class='latex' /></p>
<p>- &#8211; -</p>
<p>O primeiro integral pode ser calculado pelo método dos resíduos e o segundo pela transformada de Laplace.</p>
<p>Eu publiquei, na última entrada do meu blog, o segundo, que foi calculado por um leitor meu pelas transformadas de Laplace. Quanto ao primeiro, vi em dois livros diferentes de Análise Complexa a aplicação do método/técnica dos resíduos das funções complexas a este integral real.</p>
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	<item>
		<title>By: josejuan</title>
		<link>http://gaussianos.com/evaluemos-la-integral/#comment-11193</link>
		<dc:creator>josejuan</dc:creator>
		<pubDate>Thu, 04 Mar 2010 08:35:26 +0000</pubDate>
		<guid isPermaLink="false">http://gaussianos.com/?p=1420#comment-11193</guid>
		<description>Américo Tavares, es por el límite al infinito, la primera integral (indefinida) queda como

$latex \func{Si}\left( x\right) $

mientras que la segunda queda como

$latex \frac{2x\func{Si}(2x)+\cos (2x)-1}{2x}$

al evaluar tanto en cero como en +inf dan lo mismo.

No se si es eso lo que preguntas (si no es así, tu pregunta es ambigua).</description>
		<content:encoded><![CDATA[<p>Américo Tavares, es por el límite al infinito, la primera integral (indefinida) queda como</p>
<p><img src='http://s.wordpress.com/latex.php?latex=%5Cfunc%7BSi%7D%5Cleft%28%20x%5Cright%29%20&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\func{Si}\left( x\right) ' title='\func{Si}\left( x\right) ' class='latex' /></p>
<p>mientras que la segunda queda como</p>
<p><img src='http://s.wordpress.com/latex.php?latex=%5Cfrac%7B2x%5Cfunc%7BSi%7D%282x%29%2B%5Ccos%20%282x%29-1%7D%7B2x%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\frac{2x\func{Si}(2x)+\cos (2x)-1}{2x}' title='\frac{2x\func{Si}(2x)+\cos (2x)-1}{2x}' class='latex' /></p>
<p>al evaluar tanto en cero como en +inf dan lo mismo.</p>
<p>No se si es eso lo que preguntas (si no es así, tu pregunta es ambigua).</p>
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	</item>
	<item>
		<title>By: Américo Tavares</title>
		<link>http://gaussianos.com/evaluemos-la-integral/#comment-11192</link>
		<dc:creator>Américo Tavares</dc:creator>
		<pubDate>Wed, 03 Mar 2010 23:29:35 +0000</pubDate>
		<guid isPermaLink="false">http://gaussianos.com/?p=1420#comment-11192</guid>
		<description>Alguém me sabe explicar porque é que estes dois integrais dão o mesmo resultado?

$latex \displaystyle\int_{0}^{\infty }\dfrac{\sin x}{x}dx=\int_{0}^{\infty }\dfrac{\sin ^{2}x}{x^{2}}dx=\dfrac{\pi }{2}$</description>
		<content:encoded><![CDATA[<p>Alguém me sabe explicar porque é que estes dois integrais dão o mesmo resultado?</p>
<p><img src='http://s.wordpress.com/latex.php?latex=%5Cdisplaystyle%5Cint_%7B0%7D%5E%7B%5Cinfty%20%7D%5Cdfrac%7B%5Csin%20x%7D%7Bx%7Ddx%3D%5Cint_%7B0%7D%5E%7B%5Cinfty%20%7D%5Cdfrac%7B%5Csin%20%5E%7B2%7Dx%7D%7Bx%5E%7B2%7D%7Ddx%3D%5Cdfrac%7B%5Cpi%20%7D%7B2%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\displaystyle\int_{0}^{\infty }\dfrac{\sin x}{x}dx=\int_{0}^{\infty }\dfrac{\sin ^{2}x}{x^{2}}dx=\dfrac{\pi }{2}' title='\displaystyle\int_{0}^{\infty }\dfrac{\sin x}{x}dx=\int_{0}^{\infty }\dfrac{\sin ^{2}x}{x^{2}}dx=\dfrac{\pi }{2}' class='latex' /></p>
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	<item>
		<title>By: jbm</title>
		<link>http://gaussianos.com/evaluemos-la-integral/#comment-11191</link>
		<dc:creator>jbm</dc:creator>
		<pubDate>Tue, 07 Jul 2009 19:22:15 +0000</pubDate>
		<guid isPermaLink="false">http://gaussianos.com/?p=1420#comment-11191</guid>
		<description>Fantástico. Acabo de aprender la potencia de derivar bajo el signo de la integral. Gracias.

$latex G(t)=\int\limits_{0}^{\pi/2}\frac{\arctan(t\tan(x)}{\tan(x)}dx}$</description>
		<content:encoded><![CDATA[<p>Fantástico. Acabo de aprender la potencia de derivar bajo el signo de la integral. Gracias.</p>
<p><img src='http://s.wordpress.com/latex.php?latex=G%28t%29%3D%5Cint%5Climits_%7B0%7D%5E%7B%5Cpi%2F2%7D%5Cfrac%7B%5Carctan%28t%5Ctan%28x%29%7D%7B%5Ctan%28x%29%7Ddx%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='G(t)=\int\limits_{0}^{\pi/2}\frac{\arctan(t\tan(x)}{\tan(x)}dx}' title='G(t)=\int\limits_{0}^{\pi/2}\frac{\arctan(t\tan(x)}{\tan(x)}dx}' class='latex' /></p>
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	<item>
		<title>By: gaussianos</title>
		<link>http://gaussianos.com/evaluemos-la-integral/#comment-11190</link>
		<dc:creator>gaussianos</dc:creator>
		<pubDate>Sun, 28 Jun 2009 15:28:36 +0000</pubDate>
		<guid isPermaLink="false">http://gaussianos.com/?p=1420#comment-11190</guid>
		<description>Saqué el problema del link que ha puesto &lt;strong&gt;Americo&lt;/strong&gt;, es decir, esa era mi propuesta :).</description>
		<content:encoded><![CDATA[<p>Saqué el problema del link que ha puesto <strong>Americo</strong>, es decir, esa era mi propuesta <img src='http://gaussianos.com/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' /> .</p>
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	</item>
	<item>
		<title>By: Emmanuel</title>
		<link>http://gaussianos.com/evaluemos-la-integral/#comment-11189</link>
		<dc:creator>Emmanuel</dc:creator>
		<pubDate>Sun, 28 Jun 2009 03:51:29 +0000</pubDate>
		<guid isPermaLink="false">http://gaussianos.com/?p=1420#comment-11189</guid>
		<description>ahora k ya vimos una manera de resolverlo con el link
de americo
cual era tu propuesta de solucion ^DiAmOnD^
? :O</description>
		<content:encoded><![CDATA[<p>ahora k ya vimos una manera de resolverlo con el link<br />
de americo<br />
cual era tu propuesta de solucion ^DiAmOnD^<br />
? :O</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Américo Tavares</title>
		<link>http://gaussianos.com/evaluemos-la-integral/#comment-11188</link>
		<dc:creator>Américo Tavares</dc:creator>
		<pubDate>Thu, 25 Jun 2009 23:14:51 +0000</pubDate>
		<guid isPermaLink="false">http://gaussianos.com/?p=1420#comment-11188</guid>
		<description>Só para informar que o método de frikis4ever &#124; 24 de Junio de 2009 &#124; 11:29 é essencialmente o indicado no Exemplo 3.3 &lt;a href=&quot;http://ocw.mit.edu/NR/rdonlyres/Mathematics/18-304Spring-2006/80FAFE90-0273-499D-B3D6-EDECAFE3968D/0/integratnfeynman.pdf&quot; rel=&quot;nofollow&quot;&gt;INTEGRATION: THE FEYNMAN WAY&lt;/a&gt; por um Anónimo. Tomei conhecimento deste método no blog &quot;topologicalmusings&quot;, onde comentei, em Dezembro 5, 2008

( http://topologicalmusings.wordpress.com/2008/10/12/solution-to-pow-10-another-hard-integral/#comment-640 )</description>
		<content:encoded><![CDATA[<p>Só para informar que o método de frikis4ever | 24 de Junio de 2009 | 11:29 é essencialmente o indicado no Exemplo 3.3 <a href="http://ocw.mit.edu/NR/rdonlyres/Mathematics/18-304Spring-2006/80FAFE90-0273-499D-B3D6-EDECAFE3968D/0/integratnfeynman.pdf" rel="nofollow">INTEGRATION: THE FEYNMAN WAY</a> por um Anónimo. Tomei conhecimento deste método no blog &#8220;topologicalmusings&#8221;, onde comentei, em Dezembro 5, 2008</p>
<p>( <a href="http://topologicalmusings.wordpress.com/2008/10/12/solution-to-pow-10-another-hard-integral/#comment-640" rel="nofollow">http://topologicalmusings.wordpress.com/2008/10/12/solution-to-pow-10-another-hard-integral/#comment-640</a> )</p>
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	<item>
		<title>By: carlos torres</title>
		<link>http://gaussianos.com/evaluemos-la-integral/#comment-11187</link>
		<dc:creator>carlos torres</dc:creator>
		<pubDate>Thu, 25 Jun 2009 19:13:31 +0000</pubDate>
		<guid isPermaLink="false">http://gaussianos.com/?p=1420#comment-11187</guid>
		<description>Excelente frikis4ever</description>
		<content:encoded><![CDATA[<p>Excelente frikis4ever</p>
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	<item>
		<title>By: M</title>
		<link>http://gaussianos.com/evaluemos-la-integral/#comment-11186</link>
		<dc:creator>M</dc:creator>
		<pubDate>Wed, 24 Jun 2009 15:31:36 +0000</pubDate>
		<guid isPermaLink="false">http://gaussianos.com/?p=1420#comment-11186</guid>
		<description>jejeje, muy buena, frikis4ever (me río por la simpleza con respecto a la demostración que dí más arriba).</description>
		<content:encoded><![CDATA[<p>jejeje, muy buena, frikis4ever (me río por la simpleza con respecto a la demostración que dí más arriba).</p>
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