This process for reversing the Product Rule for Derivatives is called Integration by Parts . It is covered in Section 14.2. In Integration by Parts, the integrand (the thing you are finding the antiderivative of) is written as a product. One piece is thought of as *u* and the other part *v*‘. The formula then says

Below are several examples that students worked out.

**Problem 1** –

**Problem 2** –