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 [arctan(1/sqrt 2) to pi/4] int [cot(theta) csc(theta) to 2 sec(theta)] r^3 dr dtheta
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random