Domain of A Function

Domain Of A Function

In mathematics, the domain of definition or simply the domain of a function is the set of "input" or argument values for which the function is defined. That is, the function provides an "output" or value for each member of the domain.

For instance, the domain of cosine is the set of all real numbers, while the domain of the square root consists only of numbers greater than or equal to 0 (ignoring complex numbers in both cases). For a function whose domain is a subset of the real numbers, when the function is represented in an xy Cartesian coordinate system, the domain is represented on the x-axis.

Read more about Domain Of A Function:  Formal Definition, Natural Domain, Domain of A Partial Function, Category Theory, Real and Complex Analysis, More Examples

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