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.
(4-2sqrt3)/pi+ln(3)-ln(2)-4/pi^2sum ln(abs(1-1/(4(3n+1))))/(2n+1)^2 from -200 to 200
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random