(adsbygoogle = window.adsbygoogle || []).push({}); [SOLVED] Sum converging to pi^2/6, why?

I've seen the identity,

[tex]\frac{\pi^2}{6}=\sum_{n=1}^\infty \frac{1}{n^2}[/tex]

but I've never seen a proof of this. Could anyone tell me why this is true?

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# Sum converging to pi^2/6, why?

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