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_0^1 int_0^(1-x) 3(1+2e^{-(x-y)^2-y^2-x^2} - e^{-y^2-x^2} - e^{-(x-y)^2-x^2}-e^{-(x-y)^2-y^2}) dy dx
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random