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18 May, 15:43

Find the formula for df^-1/dx.

f (x) = (7-x) ^3

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  1. 18 May, 15:59
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    Here is the equation to solve the problem above:

    f (x) = (7-x) ^3

    y = (7-x) ^3

    switch y and x

    x = (7 - y) ^3

    third root of x = 7 - y

    -y = 3rootx - 7

    so: f′ (x) = 3^ √x - 7
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