Return to Assignments Product and Quotient rule

### Assignment 15

Differentiate:

### Solution

This function is not in the list of standard functions (it is with argument , but it is not with argument ) and at first sight we do not recognize a product. Yet, by applying the double angle formula we can write:

and thus we can apply the product rule:

Again the double angle formula is applied.

If you are familiar with the chain rule you will notice that this is a faster method.

Return to Assignments Product and Quotient rule