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Mathematics 49 Online
OpenStudy (anonymous):

The function below does not have an inverse. Restrict the domain of the function so that the restricted function has an inverse. f(x) = 2(x + 1)2 - 8

hero (hero):

\[f^{-1}(x) = \sqrt{\frac{x+8}{2}}-1\]

hero (hero):

Says it doesn't have an inverse, but I just found the inverse anyway

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