limit -2^(-2 + z) π^(-1 + z) x^(-z) ((-i x)^z Γ(1 - z, -2 i π x) + (i x)^z Γ(1 - z, 2 i π x)) as x->1

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.