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.
Maclaurin for e^(-x) up to x^4 (direct substitution into e^x )
Maclaurin for e^(-x) up to x^4 (direct substitution into e^x )
Natural Language
Math Input
Extended Keyboard
