Which of the following functions are continuous for all values in their domain? Justify your answers.


c. T(t)=temperature t minutes after midnight in Chicago on January 1

Key Concepts

Continuity of Functions

A function is continuous at a point if the limit of the function as it approaches that point equals the function's value at that point. For a function to be continuous over its entire domain, it must be continuous at every point in that domain. This means there are no breaks, jumps, or asymptotes in the function's graph.

Domain of a Function

The domain of a function is the set of all possible input values (or 't' values) for which the function is defined. Understanding the domain is crucial for determining continuity, as a function may be continuous on its domain but not defined outside of it. For example, a temperature function may only be defined for certain time intervals.

Real-World Context of Functions

In applied mathematics, functions often represent real-world phenomena, such as temperature over time. Analyzing these functions requires understanding how they behave in practical scenarios. For instance, temperature changes throughout the day can be modeled as a continuous function, but external factors may introduce discontinuities that need to be considered.