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.
Integral (log(abs(r+(r^2+(a/2)^2)^(1/2)))) dr
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random