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.
Explain why f(a) doesn't need to be defined for limit as x -> a of f(x) to exist. Give an example
Explain why f(a) doesn't need to be defined for limit as x -> a of f(x) to exist. Give an example
Natural Language
Math Input
Extended Keyboard