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[(R^2 + R Cos[t])/(1+R^2+2 R Cos[t]), {t,0,2 Pi}]
Integrate[(R^2 + R Cos[t])/(1+R^2+2 R Cos[t]), {t,0,2 Pi}]
Natural Language
Math Input
Extended Keyboard
