## Definition of Continuity

### In mathematics, continuity is a fundamental concept that describes the behavior of a function at every point within its domain

In mathematics, continuity is a fundamental concept that describes the behavior of a function at every point within its domain. A function is said to be continuous at a specific point if its values at that point approach the same value as its input approaches the given point.

More formally, a function f(x) is continuous at a point c if the following conditions are met:

1. f(c) is defined (i.e., the function has a value at c).

2. The limit of f(x) as x approaches c exists.

3. The limit of f(x) as x approaches c is equal to f(c).

These conditions imply that there are no sudden jumps, gaps, or breaks in the graph of the function at the point c. In other words, if you were to draw the graph of a continuous function, you would be able to do so without lifting your pencil from the paper.

Continuity can also be defined for a function over an interval or a combination of intervals within its domain. A function is considered continuous over an interval if it is continuous at every point within that interval.

It is important to note that not all functions are continuous. Discontinuous functions may exhibit behaviors such as jumps, removable discontinuities (holes), or infinite discontinuities. Continuity is a crucial property in calculus and analysis as it allows for the application of many important theorems and techniques.

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