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Math Help - power rule derivatives

  1. #1
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    power rule derivatives

    ok i need some help with this one...

    h(x) = x^5+1/(9x)

    i know first you have to make it so you have powers, but how would you do that for 1/(9x)...thanks

    mathlete
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  2. #2
    Super Member wingless's Avatar
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    \frac{1}{x^n} = x^{-n}

    So,
    \frac{1}{9x} = \frac{1}{9}\cdot \frac{1}{x} = \frac{1}{9}\cdot x^{-1}
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