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Range

Revision as of 19:18, 28 June 2006 by ComplexZeta (talk | contribs)
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Let $A$ and $B$ be any sets, and let $f:A\to B$ be any function. Then $\{b\in B\mid \mathrm{there\ is\ some\ } a\in A\mathrm{\ such\ that\ } f(a)=b\}$ is called the range or image of $f$.

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