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 R of (1-r/R)^2 * 2*r/(R^2) dr
integral from 0 to R of (1-r/R)^2 * 2*r/(R^2) dr
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random