Mathematics
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Kim Jong Un
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All Questions Answers
Score Newest
answer
36
Discrete math. Finding a perfect square.
Oct 2, 2014
answer
23
Maximum value of $\sin A+\sin B+\sin C$?
Oct 25, 2014
answer
23
Proving that for when AB = 2BA, then B is not invertible if A is invertible.
Mar 27, 2015
answer
19
If $5x+7y=2011$ show that $285<x+y<403$
Jul 18, 2015
answer
18
Why is $n^2+4$ never divisible by $3$?
Apr 29, 2015
answer
17
Prove that $|a+b|^p \leq 2^p \{ |a|^p +|b|^p \}$
Mar 11, 2015
answer
17
what would be the way to solve a system of equations like this one?
Sep 10, 2014
answer
15
Solving a functional equation $f(x)+f\left(\frac{1}{1-x}\right)=x$
Dec 17, 2015
answer
13
Bound for $\left|\sin(x) +\cos(x)\right|$
Sep 9, 2014
answer
12
When is the difference of two convex functions convex?
Oct 5, 2014
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53
Making nature documentaries: scripting then filming or the other way?
10
In-universe explanation for Walter Donovan's foolish decision?
7
When the Chinese were driven out of modern Vietnam in AD 938, did an Vietnamese ethnic identity already exist?

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