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Wolfram|Alpha: http://www.wolframalpha.com; search query: 'what is pi?' | Download Scientific Diagram
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real analysis - How can I prove the Wolfram Alpha result $\int_0^{\infty} \frac{(\sin x)^2}{x^2-\pi ^2} dx=-\frac1{2\pi}$? - Mathematics Stack Exchange
![Wolfram|Alpha: http://www.wolframalpha.com; search query: 'what is pi?' | Download Scientific Diagram Wolfram|Alpha: http://www.wolframalpha.com; search query: 'what is pi?' | Download Scientific Diagram](https://www.researchgate.net/publication/259703755/figure/fig4/AS:670000247492632@1536751915719/WolframAlpha-http-wwwwolframalphacom-search-query-what-is-pi.png)
Wolfram|Alpha: http://www.wolframalpha.com; search query: 'what is pi?' | Download Scientific Diagram
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