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.
4(a-1)/sqrt(1+(a-1)^2) (a*arcsinh(sqrt(a-1)) - arcsinh(a-1)) when a = sqrt(2.0)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random