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Thread: partial derivatives

  1. Oct 6th 2008, 08:17 AM #1
    mathlovet
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    partial derivatives

    is this correct?

    f(x,y)= arctan(y/x) , f(x)= (2,3)

    so, fx(x,y) = -y/(x^2+y^2)

    fx(2,3) = -3/(4+9)= -3/13
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  2. Oct 6th 2008, 08:51 AM #2
    Chris L T521
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    Quote Originally Posted by mathlovet View Post
    is this correct?

    f(x,y)= arctan(y/x) , f(x)= (2,3)

    so, fx(x,y) = -y/(x^2+y^2)

    fx(2,3) = -3/(4+9)= -3/13
    Yes .

    --Chris
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