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