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Math Help - Relative and Absolute Extrema

  1. #1
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    Relative and Absolute Extrema

    This is the problem:
    Find the relative extrema(if any) and the absolute extrema of the function y=xln(x+3) on the closed interval [0,3].
    First you find y' right? I got y'=(x)/(x+3)+log(x+3)
    What do i do now?
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  2. #2
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    Quote Originally Posted by calculusphobe View Post
    This is the problem:
    Find the relative extrema(if any) and the absolute extrema of the function y=xln(x+3) on the closed interval [0,3].
    First you find y' right? I got y'=(x)/(x+3)+log(x+3)
    What do i do now?
    note that y' > 0 for all x in [0,3] ... what's that tell you?
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