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Math Help - when is function increasing/decreasing

  1. #1
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    when is function increasing/decreasing

    Solve without calculator:

    when is f(x)=x^4-3x^3+2x^2-2 increasing/decreasing?
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  2. #2
    MHF Contributor
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    Quote Originally Posted by IronMan21 View Post
    Solve without calculator:

    when is f(x)=x^4-3x^3+2x^2-2 increasing/decreasing?
    Hi

    Do you know how to take the derivative ?

    f'(x)=4x^3-9x^2+4x=x(4x^2-9x+4)
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