lim(z to pi i) (2ze^z(e^z+1)/((e^z+z+1)((e^z-z+1)^2+pi^2))

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.