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    8 pages of Quadratic and other Nonlinear Inequalities

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    Critical numbers are when the equation is zero or undefined
    (a) This quadratic factors for (x-5)(x+3), so the critical numbers are -3 and 5
    (b) The function is zero when the numerator is zero at x = 5 and it is undefined when the denominator is zero at x=0 or x=-3, so the critical numbers are -3, 0, 5

    (3) The answer to this question is "all"

    Since it is the first interval AND the second, we want to ...

    Solution Summary

    Detailed Solutions with graphs and images in a Word Doc. Topics covered include critical numbers, intervals on the number line including compound intervals, solution set intervals, and graphs of quadratic functions.