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anonymous

  • 5 years ago

f(x,y) = x/y = y/x find fxx, fxy, and fyy

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  1. anonymous
    • 5 years ago
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    so do partial with respect to x and y first

  2. anonymous
    • 5 years ago
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    I'll check with my answer

  3. anonymous
    • 5 years ago
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    fx = y^-1 - 2yx^-2 = 1/y - 2y/x^2 fxx = -2y/x^3

  4. anonymous
    • 5 years ago
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    then I am stuck with fxy

  5. anonymous
    • 5 years ago
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    take Fx with respect to "y" so "x" is constant

  6. anonymous
    • 5 years ago
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    -1/y^2 + 1/x^2

  7. anonymous
    • 5 years ago
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    2y =2 and that looks good

  8. anonymous
    • 5 years ago
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    thanks

  9. anonymous
    • 5 years ago
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    no problem sorry I can't help with the extrema problem

  10. anonymous
    • 5 years ago
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    that's ok thanks again

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spraguer (Moderator)
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