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.
4pi(r^2)(((1-(2r)/(21)+(2r^2)/(1029))e^-(r/21))^2) from r=0 r=300
4pi(r^2)(((1-(2r)/(21)+(2r^2)/(1029))e^-(r/21))^2) from r=0 r=300
Natural Language
Math Input
Extended Keyboard