# If #f(x) =xe^x# and #g(x) = sin3x #, what is #f'(g(x)) #?

##### 1 Answer

Jan 11, 2016

#### Answer:

I think you meant to write this as: what is

#### Explanation:

Let

The Chain Rule says that

In this case, the Product Rule gives

Putting these things together leads to the final answer: