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user577215664
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24
Integral with constant u-substitution
Apr 23, 2018
15
Given a matrix $A$ find $A^n$.
Jul 29, 2018
14
Interesting way to evaluate $ \int \cos^3 x\ dx$
Aug 30, 2017
14
Prove that there are no integers $x$ and $y$ such that $3x^2=13+4y^2$
Sep 18, 2017
12
$\tan(z)=i$, no solution
Jul 9, 2018
8
Solution to this Differential Equation $f''(x)=f(x)f'(x)$ needed
Sep 22, 2018
7
Probability of drawing exactly $1$ ace upon drawing $2$ cards from a deck
Dec 25, 2017
7
A third order nonlinear ordinary differential equation.
Jun 25, 2018
7
Explanation about nonhomogeneous equations
Oct 13, 2017
7
How to solve $vv''+v'^2-6t^2=0$
Jun 5, 2020
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What happened with the PDE tag?
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Some questions look greyed on Meta
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Requests for Reopen & Undeletion Votes (volume 07/2018 - 12/2020)