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Math Help - Partial derivative

  1. #1
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    Partial derivative

    Not sure how to go about this, can anyone help?

    A function is defined by f (x, y, z) = -sin (2 y z x) find .
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  2. #2
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    Quote Originally Posted by mr_motivator View Post
    Not sure how to go about this, can anyone help?

    A function is defined by f (x, y, z) = -sin (2 y z x) find .
    \frac{\partial f}{\partial y} = - \cos(2 x y z) 2 x z, then

    \frac{\partial^2 f}{\partial y \partial z} = -2 \frac{\partial}{\partial z} \left( x z\cos(2 x y z) \right) then use the product rule and chain rule again.
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