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Math Help - Maximum and minimum~ help

  1. #1
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    Question Maximum and minimum~ help

    State two types of functions that you know that do not have a maximum or a minimum (unless the domain is restricted to some interval)

    Correct me if I am wrong, is it:

    f(x) = √x (sqrt)

    f(x) = x

    f(x) = 2^x

    I don't understand when it says "unless the domain is restricted to some interval."

    Thank you~


    Edit: Posted in wrong section, mods please move this thread to pre-calc section~
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  2. #2
    Grand Panjandrum
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    Re: Maximum and minimum~ help

    Quote Originally Posted by Oxidized View Post
    State two types of functions that you know that do not have a maximum or a minimum (unless the domain is restricted to some interval)

    Correct me if I am wrong, is it:

    f(x) = √x (sqrt)

    f(x) = x

    f(x) = 2^x

    I don't understand when it says "unless the domain is restricted to some interval."

    Thank you~


    Edit: Posted in wrong section, mods please move this thread to pre-calc section~
    Every function on a finite closed interval has a maximum on the interval, either a calculus like maximum in the interior of the interval, or a maximum at an end point of the interval.

    CB
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