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.
Series (1-x) Cos[Sqrt[(1+x+x^2)/3]]+Sin[x], x->1
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random