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 (pi/4)..(3pi/4) (int (0)..(2sin(f)) (r^3sin(f)cos(f)) dr) df))
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random