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.
ln ((1/sqrt(2*pi)) * (int from (-infty) to (-4.9) of (exp(-xˆ2/2)dx)))
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random