Mathematics
Myunghyun Song's user avatar
Myunghyun Song's user avatar
Myunghyun Song's user avatar
Myunghyun Song
  • Member for 5 years, 5 months
  • Last seen more than 2 years ago
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Solving mathematical problems is one of my joys. My particular interest lies in all kinds of analysis, including probability theory and statistics.

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answer
51
Does $(n+1)(n-2)x_{n+1}=n(n^2-n-1)x_n-(n-1)^3x_{n-1}$ with $x_2=x_3=1$ define a sequence that is integral at prime indices?
Mar 15, 2019
answer
26
Stuck on a Geometry Problem
Feb 25, 2019
answer
23
Methods to solve $\int_{0}^{\infty} \frac{e^{-x^2}}{x^2 + 1}\:dx$
Dec 16, 2018
answer
22
Integration with $\ln(x)$ in the denominator
Aug 20, 2019
answer
20
Evalulate $\int_0^\infty \int_0^\infty \int_0^\infty e^{-(xy+yz+zx)}\ dx\ dy\ dz$
Feb 10, 2019
answer
17
A lucky proof for the Basel problem.
Jul 29, 2019
answer
16
How to compute $\sum_{n=1}^\infty\frac{H_n^2}{n^32^n}$?
Aug 29, 2019
answer
16
Compute $\int_0^{1/2}\frac{\left(\operatorname{Li}_2(x)\right)^2}{x}dx$ or $\sum_{n=1}^\infty \frac{H_n^{(2)}}{n^32^n}$
Aug 17, 2019
answer
16
Determinant of a particular matrix.
Feb 15, 2019
answer
15
Integral inequality of length of curve
Mar 3, 2019