Math

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.

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  1. 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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    bobpursley

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