Question

What is meant by $\frac{\partial x}{\partial y}\frac{\partial y}{\partial z}\frac{\partial z}{\partial x}=-1$ ? How to interpret it?

score 1.6k · Answer 1 · 2018-08-10 21:46:12

1.6k

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What is meant by $\frac{\partial x}{\partial y}\frac{\partial y}{\partial z}\frac{\partial z}{\partial x}=-1$ ? How to interpret it?

Published on 10 Aug 2018 - 21:46

score 46 · Answer 2 · 2026-03-25 13:04:40

46

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pdf of a function of a normal random variable

Published on 25 Mar 2026 - 13:04

score 61 · Answer 3 · 2018-08-12 07:41:23

61

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'any sequence of $n$ partial differentiations of $f$ results in a constant times $f^{n}$'

Published on 12 Aug 2018 - 7:41

score 1.5k · Answer 4 · 2018-08-12 09:19:48

1.5k

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Partial derivative of $e^{x^2 + 2y^2 + 3z^2}$

Published on 12 Aug 2018 - 9:19

score 24 · Answer 5 · 2018-08-12 11:11:11

24

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finding $\frac{dz}{dt}$ of $z(x,y)= x^2y^3$ , $x(t)= 2t^3$ , $y(t) = 3t^2$

Published on 12 Aug 2018 - 11:11

score 48 · Answer 6 · 2018-08-12 15:01:00

48

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I can't solve this basic equation?

Published on 12 Aug 2018 - 15:01

score 101 · Answer 7 · 2018-08-12 17:10:58

101

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Application of chain rule for partial derivatives

Published on 12 Aug 2018 - 17:10

score 530 · Answer 8 · 2018-08-13 01:01:50

530

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If $A$ is convex and $f$ has first partial derivative zero, then $f(x',y) = f(x,y)$ for every $(x',y),(x,y) \in A$?

Published on 13 Aug 2018 - 1:01

score 38 · Answer 9 · 2018-08-13 04:38:09

38

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derivative of $[n \times \nabla \eta]^2$ with respect to $\eta$

Published on 13 Aug 2018 - 4:38

score 1.1k · Answer 10 · 2018-08-13 09:39:57

1.1k

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Partial derivative of $xy\frac{x^2-y^2}{x^2+y^2}$

Published on 13 Aug 2018 - 9:39

score 199 · Answer 11 · 2026-03-28 00:48:04

199

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PDE in cylindrical coordinates with semi-infinite boundary conditions in r direction

Published on 28 Mar 2026 - 0:48

score 32 · Answer 12 · 2018-08-13 18:37:06

32

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Partial derivatives of this function

Published on 13 Aug 2018 - 18:37

score 902 · Answer 13 · 2018-08-13 22:34:31

902

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Partial Differentiation: Suppose $f(r,\theta,\phi)$ and $x=r\sin(\theta)\cos(\phi)$. How to find $∂f/∂x$?

Published on 13 Aug 2018 - 22:34

score 66 · Answer 14 · 2018-08-14 14:13:15

66

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Let $z=(x)^y$, what is $\frac{ \partial ^2z}{\partial x \partial y}$?

Published on 14 Aug 2018 - 14:13

score 127 · Answer 15 · 2018-08-14 18:27:52

127

Views

Not sure that this function isn't differentiable at the origin

Published on 14 Aug 2018 - 18:27

List Question

What is meant by $\frac{\partial x}{\partial y}\frac{\partial y}{\partial z}\frac{\partial z}{\partial x}=-1$ ? How to interpret it?

pdf of a function of a normal random variable

'any sequence of $n$ partial differentiations of $f$ results in a constant times $f^{n}$'

Partial derivative of $e^{x^2 + 2y^2 + 3z^2}$

finding $\frac{dz}{dt}$ of $z(x,y)= x^2y^3$ , $x(t)= 2t^3$ , $y(t) = 3t^2$

I can't solve this basic equation?

Application of chain rule for partial derivatives

If $A$ is convex and $f$ has first partial derivative zero, then $f(x',y) = f(x,y)$ for every $(x',y),(x,y) \in A$?

derivative of $[n \times \nabla \eta]^2$ with respect to $\eta$

Partial derivative of $xy\frac{x^2-y^2}{x^2+y^2}$

PDE in cylindrical coordinates with semi-infinite boundary conditions in r direction

Partial derivatives of this function

Partial Differentiation: Suppose $f(r,\theta,\phi)$ and $x=r\sin(\theta)\cos(\phi)$. How to find $∂f/∂x$?

Let $z=(x)^y$, what is $\frac{ \partial ^2z}{\partial x \partial y}$?

Not sure that this function isn't differentiable at the origin

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