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Mathematics
Brian Moehring's user avatar
Brian Moehring's user avatar
Brian Moehring's user avatar
Brian Moehring
  • Member for 3 years, 10 months
  • Last seen this week
  • California, USA
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View all questions and answers
All Questions Answers
Score Newest
answer
36
Please help me spot the error in my "proof" that the sum of two irrational numbers must be irrational
Nov 30, 2019
answer
33
Is it possible to represent any positive integer with a sum of arbitrarily many distinct powers of $3$, $5$, and $7$?
Aug 15, 2019
answer
22
Is "ln" (natural log) and "log" the same thing if used in this answer?
Sep 20, 2019
answer
14
Multiplicity of root $1$ of $nX^{n+2}-(n+2)X^{n+1}+(n+2)X-n$?
Jan 10, 2022
answer
10
when does $1-x-\frac{x^2}{2!}+\frac{x^3}{3!}-...$converge
Jul 14, 2020
answer
9
Taking a bizarre limit
Nov 11, 2019
answer
9
Range of the map $(a_n)\to \prod_{n=1}^\infty(1+a_n).$
Feb 20, 2020
answer
8
Berkeley integration bee 2020 final #1: $\int_{-\infty}^\infty\frac{2020^{-|x|}}{1+5^{\arcsin(\sin^5(x))}}dx$
Jun 7, 2022
answer
7
Where is a "fat Cantor staircase" differentiable?
Oct 4, 2019
answer
7
Prime counting function; is it true that $\pi(n - m) \geq \pi(n) -\pi(m)$?
Aug 23, 2019

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