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Over which interval is the graph of f (x) = -x^2+3x+8 increasing

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  1. 27 July, 12:34
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    the answer is (-infinity, 1.5)

    Step-by-step explanation

    when f (x) is increasing f' (x) > 0

    -2x + 3 > 0

    -2x > - 3

    x< 3/2 or 1.5
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