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.
lim 2cos((sqrt(1+1/x)+sqrt(1/x))/2)sin((sqrt(1+1/x)-sqrt(1/x))/2) x->0+
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
