If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

## Calculus 1

### Unit 3: Lesson 7

Strategy in differentiating functions

# Manipulating functions before differentiation

AP.CALC: FUN‑3 (EU)

## Problem

h, left parenthesis, x, right parenthesis, equals, start fraction, sine, left parenthesis, x, right parenthesis, divided by, 3, x, end fraction
How would you rewrite h, left parenthesis, x, right parenthesis so it can be differentiated using the product rule?
Assume start text, x, end text, does not equal, start text, 0, end text.