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Mathematics
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Kim Jong Un

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 5 years, 2 months
  • 2,688 profile views
  • Last seen May 10 '18 at 18:29

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Top posts (521) All Questions Answers | Votes Newest

33 Discrete math. Finding a perfect square. Oct 2 '14
20 Proving that for when AB = 2BA, then B is not invertible if A is invertible. Mar 27 '15
20 If $5x+7y=2011$ show that $285<x+y<403$ Jul 18 '15
19 Maximum value of $\sin A+\sin B+\sin C$? Oct 25 '14
18 Why is $n^2+4$ never divisible by $3$? Apr 29 '15
17 what would be the way to solve a system of equations like this one? Sep 10 '14
15 Solving a functional equation $f(x)+f\left(\frac{1}{1-x}\right)=x$ Dec 17 '15
13 Bound for $\left|\sin(x) +\cos(x)\right|$ Sep 9 '14
11 Proof that every number ≥ $8$ can be represented by a sum of fives and threes. Mar 8 '15
11 Prove that $|a+b|^p \leq 2^p \{ |a|^p +|b|^p \}$ Mar 11 '15
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