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24 July, 07:09

What are the domain and range of the function? f (x) = - 4 (sqrt) x

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  1. 24 July, 07:34
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    Step-by-step explanation:

    f (x) = - 4√x

    1) the domain : x ≥ 0 : D = [0; +∞[

    2) the rang of : f is the domain of the inverse

    y = - 4 √x calculate x ... (x ≥ 0)

    y ≥ 0 : y² = (-4 √x) ²

    y² = 16 x

    x = y²/16

    the inverse is : g (x) = x² / 16 ... x ≥ 0 the range is : D = [0; +∞[ (same domain)
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