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.
integral from 0 to pi/2 (cos x- cos^2 x) + integral from pi/2 to pi (cos^2 x- cos x)
integral from 0 to pi/2 (cos x- cos^2 x) + integral from pi/2 to pi (cos^2 x- cos x)
Natural Language
Math Input
Extended Keyboard