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-   -   Solving quadratic functions (https://www.askmehelpdesk.com/showthread.php?t=87410)

  • Apr 29, 2007, 08:16 AM
    Kenneth Greene
    solving quadratic functions
    trying to find the max or min value and the x- and y-intercepts for 5.93x^2-3.135x-5.7

    5.69x^2-3.135-5.87
  • Apr 29, 2007, 09:17 AM
    galactus
    To find x intercepts, set y=0. To find y-intercepts, set x=0.

    To find max and min, differentiate, set to 0 and solve for x. Graph if you have a calculator.

    To check which is the max and min, use the second derivative.

    But, since this is a quadratic, you will have only one extrema. Either a max or a min, not both.

    Maybe do away with those decimals and rewrite as . Looks better.

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