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Elementary Calculus Real and Hyperreal Numbers Functions of Real Numbers Domain of a Real Function
 

Domain of a Real Function

DEFINITION

The domain of a real function f of one variable is the set of all real numbers x such that f(x) is defined.

The range of f is the set of all values f(x) where x is in the domain of f.

Examples 1-3 continued: Domain of Functons

Example 4: Functions Described by Explicitly Giving Its Domain

Example 5: Functions Within a Closed Interval

Last Update: 2006-Nov-25