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.
plot (1/2)[(e^(-x))/(sqrt(pi) sqrt(x)erf(sqrt(x))) -(1/x)+(e^(x))/(sqrt(pi) sqrt(x)erfi(sqrt(x))) ] and 0.5tanh0.5x from x = -40 to 40
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random