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.
Contourplot sin(x%2F%7Cy%7C - y%2F%7Cx%7C) from x %3D -pi to pi and y %3D -pi to pi
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random