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-   -   Maximum, minimum, concave (https://www.askmehelpdesk.com/showthread.php?t=232377)

  • Jun 30, 2008, 10:47 AM
    dths1980
    maximum, minimum, concave
    maximum, minimum, concave
    Question Details: consider the following function: f(x)=x^3-4x^2+5x-2
    a. determne the intervals of increasing anddecreasing
    b. determine local maximum and minimum
    c. determine the intervals of concave up and concave down
    d. determine the point of inflection
  • Jun 30, 2008, 11:02 AM
    ebaines
    You should know from your text that:

    a. f(x) increasing is where f'(x) > 0, and decreasing is where f'(x) < 0.
    b. local max is where f'(x) = 0 and f''(x) <0; local min is where f'(x) = 0 and f''(x) >0.
    c. Concave up is where f''(x) >0. Concave down is where f''(x) <0.
    d. Inflection points are where f''(x) = 0.

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