List questions from partial-derivative

Published on 11 Apr 2026 - 0:50

638

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Integration by parts of Wirtinger derivative

Published on 13 Nov 2015 - 15:00

899

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Find the partials $\frac{\partial z} {\partial x}$ and $\frac{\partial z}{\partial x}$ with $z$ defined implicitly as a function of $x$ and $y$

Published on 30 Mar 2026 - 2:07

480

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Total Derivative as a Linear Map

Published on 08 Apr 2026 - 18:16

40

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Find the coefficient of partial expansion $\frac{2x+3}{(1-x)(1+0.5x+0.5x^2)}$

Published on 04 Apr 2026 - 16:46

9.2k

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If $r=\sqrt{x^2+y^2}$ and $u=f(r)$ then prove $ \frac{\partial^2 u}{\partial x^2} + \frac{\partial^2 u}{\partial y^2} =f''(r)+\frac{1}{r}f'(r)$

Published on 17 Apr 2026 - 3:19

84

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Unfamiliar partial derivative notation

Published on 13 Apr 2026 - 4:10

23

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Separating an Odd Partial Derivative

Published on 17 Apr 2026 - 0:39

83

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Partial derivative multiplied with delta (difference)

Published on 12 Apr 2026 - 15:00

335

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Find the local extrema and saddle points of the function?

Published on 14 Apr 2026 - 5:25

62

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About total derivative

Published on 11 Apr 2026 - 1:18

102

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How to find derivative of this intergral?

Published on 12 Apr 2026 - 11:35

27

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Show $f_t- a x f_x + \frac{1}{2} b \sigma^2 f_{xx}=0$ has solutions of the form $f(x,t) = C(t) e^{-D(t)x^2}$

Published on 16 Apr 2026 - 12:38

1.4k

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Prove that the map $f(x,y) = (e^x\cos y,e^x\sin y)$ is not injective in the plane

Published on 17 Apr 2026 - 5:27

4.9k

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Find the absolute maximum and minimum values of f on the set D.

Published on 15 Apr 2026 - 8:22

List Question

How do I take derivative that involves double summation?

Integration by parts of Wirtinger derivative

Find the partials $\frac{\partial z} {\partial x}$ and $\frac{\partial z}{\partial x}$ with $z$ defined implicitly as a function of $x$ and $y$

Total Derivative as a Linear Map

Find the coefficient of partial expansion $\frac{2x+3}{(1-x)(1+0.5x+0.5x^2)}$

If $r=\sqrt{x^2+y^2}$ and $u=f(r)$ then prove $ \frac{\partial^2 u}{\partial x^2} + \frac{\partial^2 u}{\partial y^2} =f''(r)+\frac{1}{r}f'(r)$

Unfamiliar partial derivative notation

Separating an Odd Partial Derivative

Partial derivative multiplied with delta (difference)

Find the local extrema and saddle points of the function?

About total derivative

How to find derivative of this intergral?

Show $f_t- a x f_x + \frac{1}{2} b \sigma^2 f_{xx}=0$ has solutions of the form $f(x,t) = C(t) e^{-D(t)x^2}$

Prove that the map $f(x,y) = (e^x\cos y,e^x\sin y)$ is not injective in the plane

Find the absolute maximum and minimum values of f on the set D.

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