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Math Help - Rolle's Theorem

  1. #1
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    Rolle's Theorem

    Pretty sure i got it, just wanted someone to check my work.

    Find the number c that satisfies the conclusion of Rolle's Theorem. f(x) = x3 - x2 - 12x + 8
    [0, 4]

    I find the derivative, and set to 0
    3x^2-2c-12=0

    use the quadratic formula and i get 2.3609 and another number that cant be it since its not in [0,4].

    How'd I do?
    Thanks.


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  2. #2
    MHF Contributor alexmahone's Avatar
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    7
    c=2.3609
    Your answer is correct.
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