Mathematics
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NN2
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All Questions Answers
Score Newest
answer
13
If $n$ can be expressed as $2x^2+3y^2$ with integers $x$ and $y$, then so can $7n$.
Jul 9, 2021
answer
12
Is there a way to use the solution of a polynomial to approximate the solution to a similar polynomial?
Oct 18, 2022
answer
11
Closed Form Formula for Nonlinear Recurrence $a_{n+1}=\frac{a_{n}}{2} + \frac{5}{a_{n}}$
Oct 15, 2022
answer
10
What's $x^n = n!$ approximately
Feb 7, 2021
answer
8
Solve the system of equations: $32y+32x^3=6x+17$, $16z+32y^3=6y+9$, $8x+32z^3=6z+5$ where $x,y,z\in \mathbb{R}$
Mar 9, 2021
question
8
Approximation of integral of gaussian function over a parallelepiped
Jun 12, 2021
answer
8
HKMO-2020 Math contest
Apr 19, 2021
answer
6
How can I compute $\Bbb{E}\left( e^{-|B_t| \sqrt{2 \lambda}} 1_{B_t\leq -a}\right)$ for a Brownian motion?
May 6
answer
6
Upper bound of $\sum_{j=0}^{n-1}\cos((2\pi j)/n + 2\pi\theta)^2$
Sep 1
answer
6
Find all $x,y \in \mathbb N^*$ such that $\frac{1}{x} + \frac{1}{y}=5$
Feb 11, 2021

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