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    What Is Domain and Range

    Alternate names

    image of a function

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    Let f be a function. Then the domain of f is the set of all inputs for which f is defined.

    Let f be a function. Then the range (or image) of f is the set of all outputs (or values) of f. In other words, the range of f is the set of all f(x) for each x in the domain of f. The range of f is contained in (but not necessarily equal to) the codomain of f.

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    concepts involved | function | set related concepts | codomain of a function | range of a function

    concepts involved | domain of a function | codomain of a function | function

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