Question

Partial derivative using chain rule

score 26 · Answer 1 · 2018-04-29 04:05:02

26

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Partial derivative using chain rule

Published on 29 Apr 2018 - 4:05

score 188 · Answer 2 · 2026-03-25 01:14:52

188

Views

Solving nonlinear system to change variable in a PDE

Published on 25 Mar 2026 - 1:14

score 34 · Answer 3 · 2026-03-25 06:03:56

34

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If $ u $ satisfy $ u_{t} = ku_{xx} $ then so does $ u_{\alpha, \beta, \gamma} $, provided $ \beta = \alpha^{2} $

Published on 25 Mar 2026 - 6:03

score 79 · Answer 4 · 2018-04-29 14:20:55

79

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Derivative by element from inverse matrices

Published on 29 Apr 2018 - 14:20

score 60 · Answer 5 · 2018-04-29 14:31:17

60

Views

Partial derivative with chain rule

Published on 29 Apr 2018 - 14:31

score 339 · Answer 6 · 2026-03-24 23:51:34

339

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How is the Jacobian $J_{h(g(x))}=J_f$ of composed function $f(x)=h(g(x))$ a sum of the gradients of g, $\nabla g_i(x)$ weighted by $g_i(x)$?

Published on 24 Mar 2026 - 23:51

score 420 · Answer 7 · 2018-04-30 04:00:18

420

Views

What does $D_{12}f$ mean compared to $D_{1}f$, for example?

Published on 30 Apr 2018 - 4:00

score 118 · Answer 8 · 2018-04-30 08:22:30

118

Views

Reconstruct a function $f: \mathbb{R}^3 \to \mathbb{R}$ from two identities on its partial derivatives

Published on 30 Apr 2018 - 8:22

score 147 · Answer 9 · 2018-04-30 09:32:08

147

Views

$f(x,y) := \begin{cases} \frac{xy}{x^2+y^2}, &\mbox{if } (x,y) \neq (0,0)\\ 0, & \mbox{if } (x,y)=(0,0) \end{cases}$ not differentiable in $(0,0)^T$

Published on 30 Apr 2018 - 9:32

score 25 · Answer 10 · 2026-03-25 17:23:37

25

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Radical additive expression in relation to partial derivative.

Published on 25 Mar 2026 - 17:23

score 1.1k · Answer 11 · 2018-05-01 14:06:54

1.1k

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Determine whether the convex, concave, or neither.

Published on 01 May 2018 - 14:06

score 114 · Answer 12 · 2026-03-25 15:32:20

114

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what to do with a constant of a scalar potential if all you need is a constant

Published on 25 Mar 2026 - 15:32

score 2.1k · Answer 13 · 2018-05-02 02:41:12

2.1k

Views

Finding the maxima of a 3 variable function - basics

Published on 02 May 2018 - 2:41

score 432 · Answer 14 · 2018-05-02 10:22:41

432

Views

Solving least squares with partial derivatives.

Published on 02 May 2018 - 10:22

score 66 · Answer 15 · 2026-03-25 14:12:09

66

Views

Matrix derivative of a function

Published on 25 Mar 2026 - 14:12

List Question

Partial derivative using chain rule

Solving nonlinear system to change variable in a PDE

If $ u $ satisfy $ u_{t} = ku_{xx} $ then so does $ u_{\alpha, \beta, \gamma} $, provided $ \beta = \alpha^{2} $

Derivative by element from inverse matrices

Partial derivative with chain rule

How is the Jacobian $J_{h(g(x))}=J_f$ of composed function $f(x)=h(g(x))$ a sum of the gradients of g, $\nabla g_i(x)$ weighted by $g_i(x)$?

What does $D_{12}f$ mean compared to $D_{1}f$, for example?

Reconstruct a function $f: \mathbb{R}^3 \to \mathbb{R}$ from two identities on its partial derivatives

$f(x,y) := \begin{cases} \frac{xy}{x^2+y^2}, &\mbox{if } (x,y) \neq (0,0)\\ 0, & \mbox{if } (x,y)=(0,0) \end{cases}$ not differentiable in $(0,0)^T$

Radical additive expression in relation to partial derivative.

Determine whether the convex, concave, or neither.

what to do with a constant of a scalar potential if all you need is a constant

Finding the maxima of a 3 variable function - basics

Solving least squares with partial derivatives.

Matrix derivative of a function

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