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7 November, 18:20

Use the function f (x) = x^2-8 find the inverse of f (x)

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  1. 7 November, 22:06
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    Step-by-step explanation:

    let : y = x² - 8

    calculate : x

    x² = y + 8

    x exist : y + 8 ≥ 0

    x = √ (y + 8) or x = - √ (y + 8)

    conclusion:

    if : x ≥ 0 the inverse of f (x) is : g (x) = √ (x + 8)

    if : x ≤ 0 the inverse of f (x) is : h (x) = - √ (x + 8)
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