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Math Help - Solving for x

  1. #1
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    Solving for x

    I'm trying to find out the concavity of


    I know the derivative is (2/3)x^-(2/3) but I do not know how to solve for X



    Thanks
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  2. #2
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    Quote Originally Posted by Chrisss View Post
    I'm trying to find out the concavity of


    I know the derivative is (2/3)x^-(2/3) but I do not know how to solve for X



    Thanks

    Solve WHAT for x?? You need the second derivative and check where it is positive and where negative. That'll give you the concavity of the function.

    Tonio
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