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((sqrt(8/(3a))sin^2((pi*x)/a))(sqrt(8/(3a))sin^2((2*pi*x)/a))),[x,0,a]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random