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$\operatorname{Iff}(\mathrm{x})=\left(4-(\mathrm{x}-7)^3\right\}$, then $\mathrm{f}^{-1}(\mathrm{x})=$
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Verified Answer
$$
(\text { fofof })(x)=\frac{x}{\sqrt{3 x^2+1}}
$$
(\text { fofof })(x)=\frac{x}{\sqrt{3 x^2+1}}
$$
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