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22 February, 13:05

What is the inverse of f (x) = x + 2? a. h (x) = x + 2 b. h (x) = x - 2 c. h (x) = 3x - 2 d. h (x) = 3x - 6

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  1. 22 February, 13:17
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    F (x) = x+2

    replace f (x) with y

    y=x+2

    interchange the variables

    x = y+2

    solve for y

    x-2=y

    replace y with f^-1 (x)

    f^-1 (x) = x-2

    so the answer is b. h (x) = x-2
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