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Thread: Rolle's Theorem

  1. #1
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    Rolle's Theorem

    So I am really stuck on this one too.
    f(x) = x^(2/3) - 1 has two roots at x = -1, 1 but f' has no zero in (-1,1). Explain why this does not contradict Rolle's Theorem.

    (Sorry about the multiple posts, my math final is Wednesday and I am doing an exam review)
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  2. #2
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    Re: Rolle's Theorem

    Actually I figured it out, realised its not differentiable at 0. Thanks though
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