What AoPSers Like

by rrusczyk, Mar 15, 2011, 3:31 AM

It says something about our community that the post on our Facebook feed that has received the most likes is the one we posted today:
Quote:
4(1 - 1/3 + 1/5 - 1/7 + 1/9 - 1/11 + 1/13 - 1/15 + 1/17 - 1/19 + 1/21 - 1/23 + 1/25 - 1/27 + 1/29 - 1/31 + . . . )

Comment

4 Comments

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$\boxed{\pi}$

by ahaanomegas, Mar 15, 2011, 3:42 AM

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Happy Pi Day!

by ahaanomegas, Mar 15, 2011, 3:42 AM

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Why $\pi$ ... I still don't understand.....

by alkahfi, Mar 20, 2011, 2:20 AM

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$1- \frac{1}{3} + \frac{1}{5} - \frac{1}{7} \ldots$ is the arctangent series for $\frac{\pi}{4}$. Multiply by $4$ and you have $\pi$.

by fries4guys, Apr 11, 2011, 7:38 PM

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