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19 October, 01:19

Verify if 1/2x-2 and g (x) = 2x + 4 are inverses

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  1. 19 October, 02:17
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    They are inverses if f ((g (x)) = x

    f ((g (x)) = (1/2) (2x + 4) - 2 = x + 2 - 2 = x

    so this proves that g (x) is the inverse of f (x)

    the other inverse g ((f (x)) should also be = x
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