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.
sum j=5 to 15 1/(j^2+4) * 1.0
sum j=5 to 15 1/(j^2+4) * 1.0
Natural Language
Math Input
Extended Keyboard