List questions from partial-derivative

Published on 06 Jun 2019 - 17:35

56

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Applications of Partial Derivatives on $f(x, y) = \sqrt{\frac{1}{|1-x^2 - y^2|}}$

Published on 25 Mar 2026 - 1:20

45

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Fourier Sine Transform for a system

Published on 30 Mar 2026 - 1:45

37

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Partial derivative: Change of variable

Published on 07 Jun 2019 - 6:44

33

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Proof-Verification: if $f''_{xy}(x,y),f''_{yx}(x,y)$ is continuous at $(x_0,y_0)$，then $f''_{xy}(x_0,y_0)=f''_{yx}(x_0,y_0).$

Published on 07 Jun 2019 - 11:21

27

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elementary partial derivative proof.

Published on 09 Jun 2019 - 15:13

51

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Partial derivative condition

Published on 09 Jun 2019 - 15:56

997

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Hessian of a function of norm

Published on 25 Mar 2026 - 13:59

592

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Laplacian and orthogonal operator

Published on 25 Mar 2026 - 17:18

379

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Finding a second order derivatives of multivariable implicit function

Published on 25 Mar 2026 - 17:44

110

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How to calculate the gradient of $\sum_{i=1}^N \sum_{j=N+1}^{N+M} h_i h_j (\phi_i^T \phi_j)$?

Published on 28 Mar 2026 - 15:21

71

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Chain rule in multi-variable functions

Published on 28 Mar 2026 - 20:50

199

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Determine if the following function differentiable at (0,0)

Published on 12 Jun 2019 - 0:37

50

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I have a question about Elzaki variational iteration method.

Published on 25 Mar 2026 - 3:07

322

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Name for problem of reconstructing a function from partial derivatives?

Published on 12 Jun 2019 - 11:25

List Question

Prove that second partial derivatives are not equal

Applications of Partial Derivatives on $f(x, y) = \sqrt{\frac{1}{|1-x^2 - y^2|}}$

Fourier Sine Transform for a system

Partial derivative: Change of variable

Proof-Verification: if $f''_{xy}(x,y),f''_{yx}(x,y)$ is continuous at $(x_0,y_0)$，then $f''_{xy}(x_0,y_0)=f''_{yx}(x_0,y_0).$

elementary partial derivative proof.

Partial derivative condition

Hessian of a function of norm

Laplacian and orthogonal operator

Finding a second order derivatives of multivariable implicit function

How to calculate the gradient of $\sum_{i=1}^N \sum_{j=N+1}^{N+M} h_i h_j (\phi_i^T \phi_j)$?

Chain rule in multi-variable functions

Determine if the following function differentiable at (0,0)

I have a question about Elzaki variational iteration method.

Name for problem of reconstructing a function from partial derivatives?

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