# Math Help - Question: ln integration question

1. ## Question: ln integration question

Hello.
I don't know how to solve this problem.
$
\int \frac{3^{lnx}}{x}~dx

$

2. make $u = \ln(x) \implies \frac{du}{dx} = \frac{1}{x}$

3. Originally Posted by appplejack
Hello.
I don't know how to solve this problem.
$
let $u = \ln{x}$