QuestionFind $f^{\prime \prime}(x)$ $$\begin{array}{r} f(x)=x^{1 / 9} \\ f^{\prime \prime}(x)=\square \end{array}$$

Studdy Solution
Simplify the expression for the second derivative:
$$f^{\prime \prime}(x) = -\frac{8}{81}x^{-17/9}$$
The second derivative $f^{\prime \prime}(x)$ is:
$$\boxed{-\frac{8}{81}x^{-17/9}}$$