Physics Forums

Physics Forums (http://www.physicsforums.com/index.php)
-   Differential Equations (http://www.physicsforums.com/forumdisplay.php?f=74)
-   -   The chain rule (PDE) (http://www.physicsforums.com/showthread.php?t=575550)

Kork Feb8-12 09:40 AM

The chain rule (PDE)
 
Im new on the forum, so I hope you guys will have some patience with me :-)

I have a question about the chain rule and partial differential equations that I cant solve, it's:

Write the appropriate version of the chain rule for the derivative:

∂z/∂u if z=g(x,y), where y=f(x) and x=h(u,v)

I have tried to do a dependence chart of it, but it's just not working for me.

Thank you very much.

alan2 Feb8-12 03:45 PM

Re: The chain rule (PDE)
 
∂z/∂u=(∂z/∂x)(∂x/∂u)+(∂z/∂y)(dy/dx)(∂x/∂u)

Draw a diagram. It is pretty straightforward.


All times are GMT -5. The time now is 02:53 AM.

Powered by vBulletin Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
© 2014 Physics Forums