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Let f (x) = sqrt x-5. Find f^-1

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  1. 5 July, 05:40
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    F = x (sqrt (x-5))

    = sqrt (x^2 - 5x)

    = x - 5x/5x

    f = - 4x/5x

    therefore

    f^-1 = 5x/-4x
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