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25 June, 11:11

Find the inverse function of f informally. verify that f (f-1 (x)) = x and f-1 (f (x)) = x

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  1. 25 June, 12:34
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    Hello:

    f (x) = 3x f-1 (x) = x/3

    f (f-1 (x)) = f (x/3) = 3 (x/3) = x

    f-1 (f (x)) = f-1 (3x = 3x/3=x
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