Mathematics
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mja's user avatar
mja's user avatar
mja
  • Member for 8 years, 4 months
  • Last seen more than 2 years ago
  • USA
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About

I'm not good at Math.

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All Questions Answers
Score Newest
question
15
Solving $\sin^{2015}x+\cos^{2015}x=\frac12$
Aug 10, 2015
question
15
If $u_{n+1}\le u_n+u_n^2$ and $\sum u_n$ converges, prove that $\lim\limits_{n\to +\infty}(n\cdot u_n)=0$
Aug 31, 2015
question
7
Evaluating $\int\sqrt{\frac{1-x^2}{1+x^2}}\mathrm dx$
Aug 26, 2015
question
7
Given $a,b,c\ge1;abc\ge8$. Proving that $\sqrt{a^2-1}+\sqrt{b^2-1}+\sqrt{c^2-1}\ge 3\sqrt3$
Sep 2, 2015
question
7
In tetrahedron ABCD, prove that $r<\frac{AB\cdot CD}{2AB+2CD}$
Sep 15, 2015
question
6
Showing that $\left (\frac{\sin x}{x} \right )^3\geq \cos^{2}x$
Aug 30, 2015
question
6
Prove that $3x-x^3<\frac2{\sin2x}$
Sep 2, 2015
question
5
Prove that $\measuredangle AQP+\measuredangle NAP=90^o$
Aug 12, 2015
question
5
Calculate $S=3\sqrt{\sqrt[3]{5}-\sqrt[3]{4}}-\sqrt[3]{2}-\sqrt[3]{20}+\sqrt[3]{25}$
Aug 13, 2015
question
4
When does $f\left [g\left (x \right ) \right ]=g\left [ f\left ( x \right ) \right ]$ have roots.
Aug 10, 2015
Top network posts
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47
How to identify gpg key IDs so they may be deleted
34
Why is using return as the last statement in a function considered bad style?
31
Why is there a large performance impact when looping over an array with 240 or more elements?
25
How to delete fonts in ubuntu
21
pacman option to search for packages that own a file

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