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.
\int_{-T}^{T}|cos[2pi (10t+5/(2pi)sin(4 pi t))]|^{2}dt
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random