### Home > CALC > Chapter 3 > Lesson 3.4.2 > Problem 3-165

3-165.

Find

Before differentiating, rewrite

with a negative fractional exponent.

Before differentiating, rewrite

with a fractional exponent.

Before differentiating, rewrite

. Think: trig identities!

Before differentiating, rewrite

by simplifying the fraction and rewriting with a fractional exponent.