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Math Help - Derivitive of this function...

  1. #1
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    Derivitive of this function...

    How would you go from this:
    \\f(x) = \frac{1}{x^{2}}

    to this:
    \\f'(x) = -\frac{2}{x^{3}}

    Thanks to anyone who responds... somehow I can't get anything other than this:
    \\f'(x) = \frac{1}{2x^{1}}
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  2. #2
    MHF Contributor FernandoRevilla's Avatar
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    Re: Derivitive of this function...

    f(x)=x^{-2} so, f'(x)=-2x^{-3}=\frac{-2}{x^3} .
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  3. #3
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    Re: Derivitive of this function...

    Okay, thank you. I guess that just means that I'm supposed to switch the variable to the numerator before I mess with it. I'll get it... eventually.
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