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Math Help - Find the second order partial derivatives of the function.

  1. #1
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    Find the second order partial derivatives of the function.

    f(x,y)=ln(1+x^2y^2)

    I got 1/2y^2x for fxx, but think I did something wrong so I stopped. Please find fxx, fyy, fxy. Thanks.
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  2. #2
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    Quote Originally Posted by jebckr View Post
    f(x,y)=ln(1+x^2y^2)

    I got 1/2y^2x for fxx, but think I did something wrong so I stopped. Please find fxx, fyy, fxy. Thanks.
    Just to get you started, f_x(x,y) = \frac{2xy^2}{1+x^2y^2}. To find f_{xx}, use the quotient rule to differentiate f_x.
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