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Math Help - Derivative Function Problem

  1. #1
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    Derivative Function Problem

    I have a problem and I need some help:-

    "For this function, find the value(s) of x at which dy/dx=0

    f(x)=3x^2 - 12x + 13

    For this function, find dy^2/d^2x."


    Any help would be greatly appreciated!!
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  2. #2
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    Quote Originally Posted by boothyuk123 View Post
    I have a problem and I need some help:-

    "For this function, find the value(s) of x at which dy/dx=0

    f(x)=3x^2 - 12x + 13

    For this function, find dy^2/d^2x."


    Any help would be greatly appreciated!!
    where, exactly, are you having a problem? are you saying that you cannot find f'(x) ?
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  3. #3
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    Right!

    I know that I am supposed to set the 1st derivative of that function equal to zero and solve for x but I am having trouble doing this!

    Any ideas?
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  4. #4
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    Use the formula

    If y =x^n \Rightarrow \frac{dy}{dx}= nx^{n-1}

    Does this help?
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