Answer
$$\frac{{dy}}{{dx}} = \pi {x^{\pi - 1}}$$
Work Step by Step
$$\eqalign{
& y = {x^\pi } \cr
& {\text{Find the derivative of }}y{\text{ with respect to }}x \cr
& \frac{{dy}}{{dx}} = \frac{d}{{dx}}\left[ {{x^\pi }} \right] \cr
& {\text{Use the power rule for differentiation }}\frac{d}{{dx}}\left[ {{x^n}} \right] = n{x^{n - 1}};{\text{ Let }}n = \pi .{\text{ Then}}{\text{,}} \cr
& \frac{{dy}}{{dx}} = \pi {x^{\pi - 1}} \cr} $$