Mathematics
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JSCB
  • Member for 11 years, 7 months
  • Last seen more than 2 years ago
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I'm deeply impressed by mathematics.

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All Questions Answers
Score Newest
answer
67
Why does $\tan^{-1}(1)+\tan^{-1}(2)+\tan^{-1}(3)=\pi$?
Dec 9, 2012
question
66
Strategies to denest nested radicals $\sqrt{a+b\sqrt{c}}$
Sep 15, 2012
question
27
Seems that I just proved $2=4$.
May 11, 2013
question
26
Find all $n>1$ such that $\frac{2^n+1}{n^2}$ is an integer.
Sep 28, 2012
question
23
Show that $\sqrt[3]{2+\frac {10} 9\sqrt 3}+\sqrt[3]{2-\frac {10} 9\sqrt 3}=2$
May 9, 2013
answer
21
Show that $d/dx (a^x) = a^x\ln a$.
May 22, 2013
question
19
When will $AB=BA$?
Aug 29, 2013
question
19
Show that $\frac 1 {\sqrt{x+y}}+\frac 1 {\sqrt{y+z}}+\frac 1 {\sqrt{z+x}}\geq2+\frac 1 {\sqrt2}$.
Jun 7, 2013
question
19
Simplify $\sqrt {\sqrt[3]{5}-\sqrt[3]{4}}$.
Sep 11, 2012
question
17
Evaluate $\int \cos(\cos x)~dx$
Mar 7, 2012
Top network posts
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32
Are there any interesting surreal constants?
23
Is every minimal hypersurface in $S^n$ algebraic?
14
The surreal version of $e$
14
Why “modding out the homeomorphism” in the category Top makes no rigorous sense?
14
CW complex of iterated loop spaces

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