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.
NIntegrate[Sqrt[1 + D[E^(-x*x), x]^2], {x, 0, 1}]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
