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21 June, 09:27

What is the inverse function of d (x) = 2x - 4?

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  1. 21 June, 09:55
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    Let d (x) = 2x - 4

    Or

    y = 2x - 4

    We have replace x = y

    x = 2y - 4

    Now Isolate "y"

    x + 4 = 2y

    Pass "2" dividing

    (x + 4) / 2 = y

    y = x/2 + 2

    Or

    d (x) ^-1 = x/2 + 2
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