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Mathematics
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xpaul

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 6 years, 2 months
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Top posts (922) All Questions Answers | Votes Newest

40 limit $\lim_{n\to ∞}\sin(\pi(2+\sqrt3)^n)$ Aug 23 '16
32 Infinite sum of reciprocals of pentagonal numbers May 30 '15
30 Evaluating the integral $\int_0^\infty \frac{\sin x} x \ dx = \frac \pi 2$? Mar 12 '13
29 Closed form for $\sum_{n=-\infty}^{\infty}\frac{1}{(n-a)^2+b^2}$. May 9 '13
23 Funny identities Apr 11 '13
21 Nice proofs of $\zeta(4) = \frac{\pi^4}{90}$? Apr 21 '13
18 Evaluating $\int_0^{\infty}\frac{\ln(x^2+1)}{x^2+1}dx$ Apr 12 '13
18 Closed form of $\int_{0}^{\infty} \frac{\tanh(x)\,\tanh(2x)}{x^2}\;dx$ Nov 11 '14
16 Math Olympiad Algebra Question Jun 5 '14
15 Prove $\lim_{x \rightarrow 0} \frac {\sin(x)}{x} = 1$ with the epsilon-delta definition of limit. Mar 13 '13
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