Definition of Continuity
In mathematics, continuity is a fundamental concept in calculus and analysis that describes the behavior of a function
In mathematics, continuity is a fundamental concept in calculus and analysis that describes the behavior of a function. A function is said to be continuous if its graph can be drawn without any breaks, holes, or jumps. More formally, a function f(x) is continuous at a point x = c if three conditions are met:
1. The function f(x) is defined at c: This means that the function must have a well-defined value at the point c. In other words, there should not be any gaps or undefined points in the function’s domain at c.
2. The limit of f(x) as x approaches c exists: This condition states that the function must approach a specific value as x gets arbitrarily close to c from both the left and right sides. This ensures that there are no abrupt changes or jumps in the function’s behavior at c.
3. The value of f(x) as x approaches c is equal to the limit: This condition emphasizes that the value of the function at c is in line with the function’s behavior in the neighborhood of c. In simpler terms, the function should not suddenly change its value at c; it should smoothly transition from the left and right limits.
If all three conditions are satisfied, then the function is continuous at the point c. If a function is continuous at every point in its domain, it is considered a continuous function overall.
It is important to note that continuity can also be analyzed on an interval or over a range of values. A function is said to be continuous on an interval if it is continuous at every point within that interval. A function is continuous over a range if it is continuous for all values within that range. Continuity is a crucial property in calculus, as many fundamental concepts such as derivatives and integrals rely on the continuity of functions for their computations.
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