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[(x Sin[x] +y Cos[y] - Pi/8)*(x Sin[x] + y Cos[y] - Pi/2) == 0.3, {x, -10.5, 10.5}, {y, -10, 10}]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random