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Math Help - Minimum value

  1. #1
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    Minimum value

    I cannot solve this problem. Please help.



    Find the minimum value of:

    2X + 1/X^2 when X > 0
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  2. #2
    Senior Member
    Joined
    Nov 2009
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    Smile

    Quote Originally Posted by chil2e View Post
    I cannot solve this problem. Please help.



    Find the minimum value of:

    2X + 1/X^2 when X > 0
    the critical point is x = 1

    from the second derivative test, we have f''(1) = 6 > 0, so it's a local minimum
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