Problem


The table below gives selected values for the differentiable and increasing function $f$ and its derivative. If $g(x)=f^{-1}(x)$, what is the value of $g^{\prime}(3)$ ?
\begin{tabular}{|c|c|c|}
\hline$x$ & $f(x)$ & $f^{\prime}(x)$ \\
\hline-2 & -5 & 9 \\
\hline 1 & -1 & 10 \\
\hline 3 & 2 & 7 \\
\hline 6 & 3 & 6 \\
\hline 8 & 8 & 2 \\
\hline 10 & 9 & 3 \\
\hline
\end{tabular}

Answer

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Answer

The value of g'(3) is \(\boxed{\frac{1}{6}}\)

Steps

Step 1 :Find the value of f(3) from the table: f(3) = 2

Step 2 :Find the value of f'(3) from the table: f'(3) = 7

Step 3 :Find the value of g(3) from the table: g(3) = 6

Step 4 :Use the formula g'(x) = 1 / f'(g(x))

Step 5 :Substitute g(3) = 6 and f'(3) = 7 into the formula: g'(3) = 1 / f'(g(3)) = 1 / f'(6) = 1 / 6

Step 6 :The value of g'(3) is \(\boxed{\frac{1}{6}}\)

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