Math Help - Integration by part Problem

1. Integration by part Problem

$\int \frac{1}{xln5x} dx$ .

2. Re: Integration by part Problem

Substitute $y=\ln{5x}$ and you should get a very familiar integral.

- Hollywood

3. Re: Integration by part Problem

Originally Posted by mastermin346
$\int \frac{1}{xln5x} dx$ .

You don't need parts!

What is the derivative of $5ln(ln(5x))~?$