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29 June, 06:57

What is the inverse of the function f (x) = 1/9x+2

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  1. 29 June, 07:12
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    F (x) = 1/9x+2

    -2 from both sides

    f (x) - 2 = 1/9x

    *2 to both sides

    9 (f (x) - 2) = x

    replace 'f (x) ' with 'x'

    9 (x-2) = f (x^-1)

    simplify and reverse sides

    f (x) ^-1 = 9x-18
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