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kobe
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71
How to prove that $\sqrt[3] 2 + \sqrt[3] 4$ is irrational?
Mar 26, 2015
33
How to prove $\sum_{n=0}^{\infty} \frac{1}{1+n^2} = \frac{\pi+1}{2}+\frac{\pi}{e^{2\pi}-1}$
Jan 19, 2015
31
How to prove the Squeeze Theorem for sequences
Feb 5, 2015
23
Intersection of two open dense sets is dense
Feb 11, 2015
22
Anybody know a proof of $\prod_{n=1}^\infty\cos(x/2^n)=\sin x/x$.
Mar 18, 2015
20
Find sum of infinite anharmonic(?) series
Nov 22, 2015
19
Deriving the Poisson Integral Formula from the Cauchy Integral Formula
Mar 20, 2015
19
Why is $-5^2=-25$?
Mar 9, 2015
18
Apparent counter example to Stoke's theorem?
Feb 24, 2015
17
Summation stuck under radical sign
Jul 14, 2015
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What to do about a plagiarized post?