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Math Help - stationary points of f(x)= sin^3xcosx

  1. #1
    Boo
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    stationary points of f(x)= sin^3xcosx

    Please, I search for stationary points of f(x)=sin^3xcosx
    I got x +kpi
    x/2 +kpi

    but result is only first
    why??Who is right???
    many thanks!!!
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  2. #2
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    Re: stationary points of f(x)= sin^3xcosx

    Quote Originally Posted by Boo View Post
    Please, I search for stationary points of f(x)=sin^3xcosx
    I got x +kpi
    x/2 +kpi
    Do you mean that \sin^3(x)\cos(x) is the derivative?
    Or is that the function for which you are to find stationary points?

    If it is the second the neither of those is the answer.
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  3. #3
    Boo
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    Re: stationary points of f(x)= sin^3xcosx

    No, sorry, points of inflection!!!
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