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.
integrate cos^2(x)http://www.wolframalpha.com/input/?i=integrate cos^2(x)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
