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.
integrate (cos^2 x) (x^2 -x-2.1)/sqrt(x^2+1) dx
integrate (cos^2 x) (x^2 -x-2.1)/sqrt(x^2+1) dx
Natural Language
Math Input
Extended Keyboard
