Definition:Real Function/Range

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This page is about Range of Real Function. For other uses, see Range.


Let $S \subseteq \R$.

Let $f: S \to \R$ be a real function.

The range of $f$ is the set of values that the dependent variable can take.

That is, it is the image set of $f$.

Also known as

Modern treatments of the subject are usually more precise.

In particular, the word range may be taken to mean codomain.