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Math Help - Partial derivative of second order from numerical values

  1. #1
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    Partial derivative of second order from numerical values

    I am asked to estimate the value of f_{xy}''(3;4) in



    I have already found:

    f_x'(3;4) = -5

    f_y'(3;4) = 2

    How do I find f_{xy}''(3;4) from there?

    Thanks a lot!
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by mathieumg View Post
    I am asked to estimate the value of f_{xy}''(3;4) in



    I have already found:

    f_x'(3;4) = -5

    f_y'(3;4) = 2

    How do I find f_{xy}''(3;4) from there?

    Thanks a lot!
    Estimate f_y(2;4), f_y(3,4) and f_y(4;4) and use these to extimate f_{yx}(3,4) or better yet look up even better methods in Abramowitz and Stegun


    CB
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