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Math Help - Absolute extrema

  1. #1
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    F(x) = (3x^4) - (4x^3) + (6x^2) - 12x - 8 interval[-2,2]

    find absolute extrema of f(x)
    Last edited by mr fantastic; March 3rd 2009 at 03:11 AM. Reason: Merged posts
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  2. #2
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    Absolute extrema are nothing more than the largest/smallest values the function takes on a certain domain. There are two possibilities: these values lie at the edge of the domain of interest, or there is a minimum/maximum within it.

    1) Find f(-2) and f(2).

    2) Find f'(x)=0 and solve for x= a,b,c,d Then find f(a), f(b), f(c), f(d).

    The answer is the greatest and least of these.
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  3. #3
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    i got 3 values for x... x = 1 , 1.i, -1.i
    so wat will be the absolute max and wat will be the absolute min?
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