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[ Exp[-t] ( 2 + t + Exp[t](-2 + t) )/(2t^2) Exp[ - Catalan t], {t, 0, Infinity}]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random