Question

Second derivative of a third degree polynomial function

score 2.4k · Answer 1 · 2026-04-14 00:51:41

2.4k

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Second derivative of a third degree polynomial function

Published on 14 Apr 2026 - 0:51

score 1.3k · Answer 2 · 2026-04-17 15:57:21

1.3k

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Proof that $g(x) = xf(x)$ is differentiable at 0 given that f is continuous at 0

Published on 17 Apr 2026 - 15:57

score 58 · Answer 3 · 2026-04-16 18:33:19

58

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Is there any integral of $x$ other than $\frac12{x^2} + c$?

Published on 16 Apr 2026 - 18:33

score 1k · Answer 4 · 2026-04-13 21:04:31

1k

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Proof that Integration is opposite of differentiation

Published on 13 Apr 2026 - 21:04

score 51 · Answer 5 · 2026-04-14 12:43:43

51

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Determining local extrema of $|f(x)|$ for $f(z)=\overline{z}(z-2)-2Re(z)$, $z=x+iy \in \mathbb{C}$

Published on 14 Apr 2026 - 12:43

score 413 · Answer 6 · 2026-04-16 12:26:43

413

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$g(x)=x^2f(x)$ differentiable at $0$ given $|f(x)|\leq M$

Published on 16 Apr 2026 - 12:26

score 57 · Answer 7 · 2026-04-09 14:43:54

57

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Understanding of cost function derivatives

Published on 09 Apr 2026 - 14:43

score 1k · Answer 8 · 2026-04-13 07:04:07

1k

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Differentiability of $h(x)=x^2\sin(1/x)$ for $x\in\mathbb{R} \backslash \{0\}$ and $h(0)=0$ and continuity of derivative

Published on 13 Apr 2026 - 7:04

score 2k · Answer 9 · 2026-04-12 05:20:57

2k

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Estimating derivatives when given a table

Published on 12 Apr 2026 - 5:20

score 782 · Answer 10 · 2026-03-24 22:08:40

782

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How is $\nabla_X \operatorname{Tr}\left\{ X^T A X B\right\} = AXB + A^TXB^T$?

Published on 24 Mar 2026 - 22:08

score 279 · Answer 11 · 2026-04-20 17:05:04

279

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Derivative of a composite function $\mathbb{R} \to \mathbb{R}^{n\times n} \to \mathbb{R} $

Published on 15 Apr 2026 - 5:34

score 740 · Answer 13 · 2026-04-16 02:46:28

740

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Uniform continuity of $x\sin(\frac{1}{x})$

Published on 16 Apr 2026 - 2:46

score 1.6k · Answer 14 · 2026-03-25 16:06:20

1.6k

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How does implicit differentiation relate to multivariable calculus?

Published on 25 Mar 2026 - 16:06

score 835 · Answer 15 · 2026-04-12 00:49:44

835

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Question about identities regarding second covariant derivatives

Published on 12 Apr 2026 - 0:49

List Question

Second derivative of a third degree polynomial function

Proof that $g(x) = xf(x)$ is differentiable at 0 given that f is continuous at 0

Is there any integral of $x$ other than $\frac12{x^2} + c$?

Proof that Integration is opposite of differentiation

Determining local extrema of $|f(x)|$ for $f(z)=\overline{z}(z-2)-2Re(z)$, $z=x+iy \in \mathbb{C}$

$g(x)=x^2f(x)$ differentiable at $0$ given $|f(x)|\leq M$

Understanding of cost function derivatives

Differentiability of $h(x)=x^2\sin(1/x)$ for $x\in\mathbb{R} \backslash \{0\}$ and $h(0)=0$ and continuity of derivative

Estimating derivatives when given a table

How is $\nabla_X \operatorname{Tr}\left\{ X^T A X B\right\} = AXB + A^TXB^T$?

More elegant solution for showing that a distribution is unimodal

Derivative of a composite function $\mathbb{R} \to \mathbb{R}^{n\times n} \to \mathbb{R} $

Uniform continuity of $x\sin(\frac{1}{x})$

How does implicit differentiation relate to multivariable calculus?

Question about identities regarding second covariant derivatives

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