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.
plot 5e^(-x/4) cos(2x)+7 and plot 8,0<x<4
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
