What does undefined limit mean?
Daniel Martin
Updated on May 08, 2026
Herein, what does it mean when a limit is undefined?
The answer to your question is that the limit is undefined if the limit does not exist as described by this technical definition. In this example the limit of f(x), as x approaches zero, does not exist since, as x approaches zero, the values of the function get large without bound.
Additionally, what is an undefined? Undefined. An expression in mathematics which does not have meaning and so which is not assigned an interpretation. For example, division by zero is undefined in the field of real numbers. SEE ALSO: Ambiguous, Complex Infinity, Directed Infinity, Division by Zero, Ill-Defined, Indeterminate, Well-Defined.
In this way, what makes a limit defined?
In mathematics, a limit is the value that a function (or sequence) "approaches" as the input (or index) "approaches" some value. Limits are essential to calculus (and mathematical analysis in general) and are used to define continuity, derivatives, and integrals.
Is undefined same as infinity?
Just like “infinite” means “not finite”, “undefined” means “not defined”. But there are many reasons why something might not be defined. One is that there may be no possible answer. For instance, is undefined when it comes to the Real numbers, because none of them equal one more than themselves.