Math
posted by Hannah .
I am having trouble figuring out how to do partial derivatives. I have tried practice problems and have read my textbook but I am still so confused. Could someone please explain how to do this? Thank you.

Partial derivatives. Treat all other variables as constants.
example
f= x sin z
df/dz= x cos z and the partial df/dx= sinz
example
f= x^2y^3 z^7
df/dy= 3x^2*y^2*z^7
http://en.wikipedia.org/wiki/Partial_derivative
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