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Math Help - Partial Differentiation

  1. #1
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    Partial Differentiation

    Hey guys...very stuck with this question...can anyone help??

    (Partial Differentiation)

    Find (∂f/∂x), (∂^2f/∂x∂y) , (∂^2f/∂y^2) for the following function


    f(x,y) = xsin(-5x - 4y) + ye^(3y)
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  2. #2
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    Quote Originally Posted by Charlieengineer84 View Post
    Hey guys...very stuck with this question...can anyone help??

    (Partial Differentiation)

    Find (∂f/∂x), (∂^2f/∂x∂y) , (∂^2f/∂y^2) for the following function


    f(x,y) = xsin(-5x - 4y) + ye^(3y)
    Okay, l what have you done on this yourself? in particular, what is the derivative of ye^{3y}? Do you see how that answers part of your question? If you are expected to be able to do partial derivatives, I assume you know derivatives of basic functions, like sine and exponential, and the product rule.
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