Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
\int \frac{1}{2x\sqrt{9x^2 - 1}}
\int \frac{1}{2x\sqrt{9x^2 - 1}}
Natural Language
Math Input
Extended Keyboard