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.
limit (1/2) sqrt(pi) e^(-t^2) Erfi[t], t -> Infinity
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random