Inverse Derivative

\hspace{-16}$If $\bf{f:(0,\infty)\rightarrow (1,\infty)}$ and $\bf{f(x)=x^4+x^2+x+1}$. Then $\bf{\frac{d}{dx}\left\{f^{-1}(4)\right\}=}$

2 Answers

Hint: try finding derivative of inverse of f(x) in terms of derivative of f(x)

IS THE ANSWER 7?

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