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Math Help - chain rule differentiation check!

  1. #1
    Super Member
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    chain rule differentiation check!

    <br /> <br />
f(x) = (cosx)^7<br /> <br />

    <br /> <br />
f '(x) = 7(cosx)^6(-sinx)<br /> <br />


    <br /> <br />
f '(x) = -7sinx(cosx)^6<br /> <br />

    is this correct?
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  2. #2
    Super Member 11rdc11's Avatar
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    Yep
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