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24 April, 15:45

Find the minimum or maximum of the function y=-4x2+12x-5.

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  1. 24 April, 17:44
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    -12 / (2*-4) = 1.5

    The minimum or maximum is in x=1.5.

    Is it minimum or maximum?

    At x=1.5, y=-415.25

    Try anything else

    x=1, y=3

    So there is a minimum at x=1.5
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