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.
{cos(2*x)+sin(2*x) = 1,3Pi<=x,x<=9Pi/2}
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
