Range of a function
Subset of a function's codomain / From Wikipedia, the free encyclopedia
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For the statistical concept, see Range (statistics).
In mathematics, the range of a function may refer to either of two closely related concepts:
In some cases the codomain and the image of a function are the same set; such a function is called surjective or onto. For any non-surjective function the codomain and the image are different; however, a new function can be defined with the original function's image as its codomain, where This new function is surjective.