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Math Help - max/min

  1. #16
    Bar0n janvdl's Avatar
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    Quote Originally Posted by Samantha View Post
    So there are no maximum nor minimum?
    No there are maxima and minima, but only local ones.
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  2. #17
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    what is it? =)
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  3. #18
    Bar0n janvdl's Avatar
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    Quote Originally Posted by Samantha View Post
    what is it? =)
    The points are (-1 ; 2) and (1 ; -2)
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  4. #19
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    Quote Originally Posted by janvdl View Post
    Would you mind explaining the other method of calculating maxima and minima to me?
    We can also use second derivative test:
    f'(a)=0 and f''(a)>0 (<0) imply f(a) is relative (or local) minimum (maximum).
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  5. #20
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    I have 5 choices.

    a) Relative maximum: x=0; Relative minimum x=squre root of5/3
    b) Relative maximum: x=-1; Relative minimum x=1
    c) Relative maxima: x=+-1; Relative minimum: x=0
    d) Relative maximum: x = 0; Relative minima x = +-1
    e) None of these


    =(
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  6. #21
    Bar0n janvdl's Avatar
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    Quote Originally Posted by Samantha View Post
    I have 5 choices.

    a) Relative maximum: x=0; Relative minimum x=squre root of5/3
    b) Relative maximum: x=-1; Relative minimum x=1
    c) Relative maxima: x=+-1; Relative minimum: x=0
    d) Relative maximum: x = 0; Relative minima x = +-1
    e) None of these


    =(
    I'd say b)...
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  7. #22
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    So which 1? LOL
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  8. #23
    Bar0n janvdl's Avatar
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    Quote Originally Posted by Samantha View Post
    So which 1? LOL
    b)

    Im sorry, i accidentally pressed the wrong key
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