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Mathematics
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H-a-y-K
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question
5
Given $u(x,y) = e^x (x \cos y - y \sin y)$ for analytic $f(z) = u + iv$, find $v(x,y)$
Mar 31, 2022
question
4
Solve definite integral $\int_{\frac{\sqrt2}2}^{\sqrt{3}} \dfrac{dx}{x\sqrt{x^2+1}}$ by variable substitution
Mar 29, 2021
question
3
Theorem about improper integral convergence by comparison
Apr 23, 2021
question
3
Solve $x^2y' + xy + 1 = 0$ first order differential equation. Where is my mistake?
Oct 17, 2022
question
2
Let A be a non-zero vector in $R^n$ and let c be a fixed number. Show that the set of all elements X in $R^n$ such that $A*X \geq c$ is convex.
Jul 30, 2020
question
2
Is this looser case of the maximal clique(connected subgraph) problem also hard?
May 25
question
2
How to transform a strong generating set of $G \leq S_n$ to a set that generates a proper subgroup of $G$?
Mar 19
question
2
Solve definite integral by substitution
Mar 29, 2021
question
2
Solve differential equation $(x^2 + y^2 + x)dx + ydy = 0$ by making a variable substitution or by turning it into a total differential equation
Oct 18, 2022
question
2
Find whether $\sum\limits_{n=1}^{\infty}\,\dfrac{\cos nx}{2^n}$ is convergent by testing it for Cauchy convergence
May 24, 2021