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 6 of (2+cos(pi*t/11))
integral from 0 to 6 of (2+cos(pi*t/11))
Natural Language
Math Input
Extended Keyboard