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yuanming luo's user avatar
yuanming luo's user avatar
yuanming luo's user avatar
yuanming luo
  • Member for 5 years, 9 months
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4
If $f(4xy)=2y[f(x+y)+f(x-y)]$ and $f(5)=3$, find $f(2015)$
Dec 27, 2018
3
Some weird results in complex number computing
Jan 8, 2019
3
Is this degree sequence planar?
Mar 17, 2023
3
An integration that wolfram cannot help me.
Mar 28, 2019
3
Show that if $m$, $n$, $m^2+n^3$, $m^3+n^2$ are all prime, then $(m,n)=(2,3)$ or $(3,2)$
Dec 21, 2020
3
Seeking an algebraic solution of this problem
Mar 16, 2020
3
How to find the positive integer solution?
Sep 16, 2019
2
Prove that $\sum_{{a_{n-1}}=1}^{a_n}\,\sum_{a_{n-2}=1}^{a_{n-1}}\,\ldots\,\sum_{a_{1}=1}^{a_2}\,a_1=\frac{\prod\limits_{i=0}^{n-1}\,(a_n+i)}{n!}$.
Nov 19, 2018
2
How do I use this interface condition?
Jul 8, 2023
2
How to find the range of $y=\frac{x^2+1}{x+1}$ without using derivative?
Jan 14, 2019