What is the difference between infinity and undefined

First of all, infinity is not a real number so actually dividing something by zero is undefined. The limit is defined if and only if the two sided limits are equal. They are not, so the limit is undefined. Sign up to join this community. The best answers are voted up and rise to the top.

Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. They are defined. But they do not exist. If someone doesn't like my examples, choose any other beast or being that you can define, but that you consider purely mythological. Nor do slithy toves, nor wabes. These words are from Lewis Carrol's poem Jabberwocky.

If you haven't read it, find it online and read it. However, that limit does not exist. Be careful though, I am not asserting that there is a non-existent limit. In interval notation: [3, oo is a way of expressing that the interval includes its left endpoint namely 3 but the interval has no right endpoint. The notation has infinity in the position that a right endpoint would occupy, if there were one, but in this context, the symbol means that the interval on the number line has no right endpoint.

This discussion on Difference between infinity and not defined? The Questions and Answers of Difference between infinity and not defined? If the answer is not available please wait for a while and a community member will probably answer this soon. Upgrade to Infinity. By continuing, I agree that I am at least 13 years old and have read and agree to the terms of service and privacy policy.

The Best you need at One Place. Start Your Infinity Experience. Forgot Password. Enter OTP. What is the largest number that you can imagine? Whatever the number you pick, one can introduce a number larger than the number you pick by simply adding one to that. There is no number larger than infinity. However, infinity is not the largest number, because it is not a number. What is the exact value of infinity? Let us answer this question after considering this example.