Mathematics
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All Questions Answers
Score Newest
answer
270
'Obvious' theorems that are actually false
Jun 4, 2014
answer
141
Are there any open mathematical puzzles?
Oct 19, 2013
answer
108
Reasoning that $ \sin2x=2 \sin x \cos x$
Aug 5, 2013
answer
95
How to prove $\int_{-\infty}^{+\infty} f(x)dx = \int_{-\infty}^{+\infty} f\left(x - \frac{1}{x}\right)dx?$
Aug 1, 2013
answer
86
What is the oldest open problem in geometry?
Aug 8, 2014
answer
74
An integral involving Airy functions $\int_0^\infty\frac{x^p}{\operatorname{Ai}^2 x + \operatorname{Bi}^2 x}\mathrm dx$
Oct 12, 2013
question
72
How can one prove that $e<\pi$?
Sep 10, 2013
answer
71
Closed form for $\int_0^1\log\log\left(\frac{1}{x}+\sqrt{\frac{1}{x^2}-1}\right)\mathrm dx$
May 13, 2013
question
62
Unexpected approximations which have led to important mathematical discoveries
May 11, 2013
answer
49
Visually deceptive "proofs" which are mathematically wrong
Apr 7, 2014
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