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.
integral 0 to 3 e^(-0.3t)*cos(3t) dt
integral 0 to 3 e^(-0.3t)*cos(3t) dt
Natural Language
Math Input
Extended Keyboard
