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.
Integrate[D[(1+Erf[b x/Sqrt[2]])^2 Exp[-x^2/2]/(4Sqrt[2Pi]), b], x]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random