- #1

- 12

- 0

## Homework Statement

Use integration by parts to evaluate the integral.

∫5x ln(4x)dx

## Homework Equations

∫udv = uv - ∫vdu

## The Attempt at a Solution

So here's my solution:

But the computer is telling me I'm wrong :( We haven't learned how to integrate lnx yet, so the only choice I have is to make u = ln(4x) (even our textbook does this). Any help would be really appreciated! Thanks :)