List questions from solution-verification

Published on 27 Mar 2026 - 1:00

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Evaluate $\int(2x + 9)e^{x^2+9x}dx$ using u-substitution

Published on 26 Mar 2020 - 12:11

584

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Elementary proof of tangent half angle formula

Published on 26 Mar 2020 - 12:40

4.9k

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Prove that A-B=A ⇔ A⋂B=Φ

Published on 26 Mar 2020 - 13:00

326

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Given a positive integer $k$, describe all positive integers $n$ such that $\langle n\rangle=k$.

Published on 26 Mar 2020 - 14:11

295

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Conformal Riemannian Metrics preserve angles but not lengths

Published on 03 Apr 2026 - 19:37

86

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A corollary of the Chernoff bound

Published on 26 Mar 2020 - 15:56

731

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Suppose that every non-zero element of $V$ is an invertible matrix.Show that $\dim_{\mathbb C} V\leqslant 1$

Published on 26 Mar 2020 - 16:18

183

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Typo in formula for Fourier transform of translation / modulation of a tempered distribution?

Published on 30 Mar 2026 - 3:21

69

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Prove that A = B ⇒ A⋂B = A⋃B

Published on 26 Mar 2020 - 17:16

151

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Uniform convergence of $\sum\limits_{n=1}^{\infty}{\frac{x^{n}}{100+x^{2n}}}$

Published on 24 Feb 2026 - 10:40

461

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A topological space $X$ has a compactification if and only if $X$ is a Tychonoff space

Published on 23 Feb 2026 - 6:22

42

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Function $f(x,y)=2e^{-xy}$ is differentiable $(x,y)=(0,1)$ but can't prove limit $\frac{o(\Delta x,\Delta y)}{\sqrt{\Delta x^2+\Delta y^2}}$ =0

Published on 26 Mar 2020 - 22:40

76

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Prove that $g''(x) = -g(x)$

Published on 25 Mar 2026 - 14:21

57

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Uniform Convergence for $\sum\limits_{n=1}^{\infty}{\frac{x^{n}}{100+x^{2n}}}$

Published on 24 Feb 2026 - 10:37

List Question

Understanding where my naive attempt to prove Countable Choice out of Finite Choice fails

Evaluate $\int(2x + 9)e^{x^2+9x}dx$ using u-substitution

Elementary proof of tangent half angle formula

Prove that A-B=A ⇔ A⋂B=Φ

Given a positive integer $k$, describe all positive integers $n$ such that $\langle n\rangle=k$.

Conformal Riemannian Metrics preserve angles but not lengths

A corollary of the Chernoff bound

Suppose that every non-zero element of $V$ is an invertible matrix.Show that $\dim_{\mathbb C} V\leqslant 1$

Typo in formula for Fourier transform of translation / modulation of a tempered distribution?

Prove that A = B ⇒ A⋂B = A⋃B

Uniform convergence of $\sum\limits_{n=1}^{\infty}{\frac{x^{n}}{100+x^{2n}}}$

A topological space $X$ has a compactification if and only if $X$ is a Tychonoff space

Function $f(x,y)=2e^{-xy}$ is differentiable $(x,y)=(0,1)$ but can't prove limit $\frac{o(\Delta x,\Delta y)}{\sqrt{\Delta x^2+\Delta y^2}}$ =0

Prove that $g''(x) = -g(x)$

Uniform Convergence for $\sum\limits_{n=1}^{\infty}{\frac{x^{n}}{100+x^{2n}}}$

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