## What is Integration by Parts?

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 $\int{u{v}' dx=uv-\int{v{u}' dx}}$

Below are several examples that students worked out.

Problem 1 $\displaystyle \int{\left( 1-x \right){{e}^{x}} dx}$ Problem 2 $\displaystyle \int {\left( 8x+10 \right) \ln \left( x \right) dx}$ $\displaystyle \int{\left( 2t-1 \right) \ln \left( t \right) dt}$ ## Do You Have More Integration By Parts Examples?

Here are some more examples of integration by parts courtesy of the face-to-face class.

Example 1 $displaystyle int{left( 2t-1 right)ln left( t right)dt}$ Example 2 $displaystyle int{{{x}^{4}}ln left( x right)dx}$ Example 3 $displaystyle int{ln left( 2x right)dx}$ Example 4 $displaystyle int{left( 5z-4 right)ln left( z right)dz}$ Example 5 $displaystyle int{{{x}^{3}}ln left( x right)dx}$ Example 6 $displaystyle int{{{x}^{2}}ln left( x right)dx}$ Example 7 $displaystyle int{ln left( 3z right)dz}$ 