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seen Mar 12 '13 at 0:22

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awarded  Good Question
Mar
28
awarded  Popular Question
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27
awarded  Nice Question
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27
awarded  Yearling
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3
awarded  Nice Question
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awarded  Nice Question
Mar
4
accepted Need some hint or technique for this integral
Mar
3
comment Need some hint or technique for this integral
Thank you Sasha! Is there special meaning for the downarrow?
Mar
3
accepted A integral from “irresistible integrals”
Mar
2
asked Need some hint or technique for this integral
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2
accepted A series involves harmonic number
Feb
28
awarded  Nice Question
Feb
26
comment A series involves harmonic number
@WillJagy, Because I was doing a integral, the last part is this tough series :(
Feb
26
asked A series involves harmonic number
Feb
21
asked Show $\sum_{n=1}^{\infty}\frac{\sinh\pi}{\cosh(2n\pi)-\cosh\pi}=\frac1{\text{e}^{\pi}-1}$ and another
Feb
19
accepted A tough series: $\sum_{k=1}^{\infty}\frac{\zeta(2k)}{(k+1)(2k+1)}$, need help
Feb
19
accepted A improper integral with Glaisher-Kinkelin constant
Feb
19
asked A hard log definite integral: $\int_0^{\pi/4}\ln^3\sin x\,\mathrm dx$
Feb
18
accepted log sin and log cos integral, maybe relate to fourier series
Feb
18
comment $\lim_{n\to\infty}\int_0^n\left(1-\frac{x}{n}\right)^n\text{e}^{\frac{x}{2}}\text{d}x$ Evaluating this limit
Thx for your explanation:)