The quotient rule is used to differentiate fractions which contain a function of x in the numerator and denominator and that cannot be divided easily.

It is an important rule that is used extensively in calculus. In the tutorial I show you what it is and how to apply it.

## Proof of Quotient Rule

## Example

The next example is more challenging in as much as it requires the use of the chain rule within the question and aims to reinforce the need for a systematic approach to simplifying the answer.

Well worth doing.