Mathematics
CryoDrakon's user avatar
CryoDrakon's user avatar
CryoDrakon's user avatar
CryoDrakon
  • Member for 8 years, 10 months
  • Last seen more than a week ago
  • Dortmund, Germany
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46
answers
102
questions
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18
Score
15
Posts
10
Posts %
16
Score
30
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20
Posts %
12
Score
18
Posts
12
Posts %
12
Score
10
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7
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8
Score
16
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11
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3
Score
8
Posts
5
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Top posts
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All Questions Answers
Score Newest
question
12
Prove that $a+b$ can't divide $a^a+b^b$ nor $a^b+b^a$
Jan 24, 2015
question
10
Proving the inequality $4\ge a^2b+b^2c+c^2a+abc$
Nov 18, 2014
answer
9
Let $p$ be a prime so $p\equiv3\pmod4$. If $p|a^2+b^2$, then $p|a,b$
Sep 16, 2016
question
8
Closed form of $\int\limits_0^{2\pi} \prod\limits_{j=1}^n \cos(jx)dx$ and combinatorial link
Aug 10, 2020
question
8
Solve the following functional equation $f(xf(y))+f(yf(x))=2xy$
Jan 6, 2015
question
7
Find all $n$ so that $s(2^n)=s(5^n)$
Jan 17, 2015
question
6
Prove that one of the elements can't be in the interval $(0,1)$
Jan 26, 2016
question
6
Show that for $n$ distinct numbers the following holds
Jan 23, 2016
question
6
Solve $3^a-5^b=2$ for integers a and b.
Nov 23, 2014
question
5
Find all $x,y\in \mathbb{N}$ such that: $2^x+17=y^2$.
Sep 8, 2015
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6
Android Things on Pi 2

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