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.
integrate 2 sqrt (x^2 y^2 - x^2 - y^2 + 1) dx dy, x=-1..1, y=-1..1
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random