List questions from partial-derivative

Published on 09 Apr 2026 - 4:42

70

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$f(x,y) = 0$ when $x = y = 0$. Shouldn't $\frac{\partial^2 f}{\partial y \partial x} = 0$?

Published on 16 Mar 2017 - 1:43

16.1k

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How do I show that partial derivatives exist everywhere?

Published on 11 Apr 2026 - 10:57

1.2k

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Find the 3rd order partial derivatives

Published on 16 Mar 2017 - 18:48

38

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Vector Calculus Notation for "Cross" Quantities

Published on 01 Apr 2026 - 20:07

190

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How to evaluate $\frac{\partial}{\partial\theta}(\frac{d\theta}{dt})$ and $\frac{d}{d\theta}(\frac{d\theta}{dt})$

Published on 11 Apr 2026 - 19:57

49

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Stationary point of $f(\zeta) =\frac{1}{\log{2}} \left[ \log\left(2 - \zeta \right) - \left( \frac {1-\zeta} {2-\zeta} \right) \zeta \right]$

Published on 17 Mar 2017 - 14:13

739

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How many of each type should be produced in order to maximize profit?

Published on 10 Apr 2026 - 19:39

87

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Constrained optimization problem with indefinite integrals

Published on 09 Apr 2026 - 11:10

250

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Plotting the contour graph of $f(x,y) = x^3+y^2-3x$

Published on 08 Apr 2026 - 19:10

222

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Double differentiation with implicit dependencies

Published on 12 Apr 2026 - 4:32

251

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Intuition behind the formula of total differential

Published on 09 Apr 2026 - 22:03

18

Views

2nd order partial differentiation

Published on 21 Mar 2026 - 1:19

77

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How can I use these boundary conditions to find a solution to this initial value problem to the heat equation?

Published on 11 Apr 2026 - 17:10

530

Views

Solution to Laplace equation

Published on 11 Apr 2026 - 13:31

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Question about Pareto Optimality

$f(x,y) = 0$ when $x = y = 0$. Shouldn't $\frac{\partial^2 f}{\partial y \partial x} = 0$?

How do I show that partial derivatives exist everywhere?

Find the 3rd order partial derivatives

Vector Calculus Notation for "Cross" Quantities

How to evaluate $\frac{\partial}{\partial\theta}(\frac{d\theta}{dt})$ and $\frac{d}{d\theta}(\frac{d\theta}{dt})$

Stationary point of $f(\zeta) =\frac{1}{\log{2}} \left[ \log\left(2 - \zeta \right) - \left( \frac {1-\zeta} {2-\zeta} \right) \zeta \right]$

How many of each type should be produced in order to maximize profit?

Constrained optimization problem with indefinite integrals

Plotting the contour graph of $f(x,y) = x^3+y^2-3x$

Double differentiation with implicit dependencies

Intuition behind the formula of total differential

2nd order partial differentiation

How can I use these boundary conditions to find a solution to this initial value problem to the heat equation?

Solution to Laplace equation

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