Mapping or Function: Let A and B be any two non-empty sets. If to each element a (pre-image) belongs to A (domain), there is assigned , in some manner or the other, a unique element b (image) belongs to B (codmain), then such an assignment f is called a mapping or function for A into B and we write f : A--> B.

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__Mapping or Function__: Let A and B be any two *non-empty sets*. If to each element a **(pre-image)** belongs to A **(domain)**, there is assigned , in some manner or the other, a unique element b **(image)** belongs to B **(codmain)**, then such an assignment f is called a** mapping** or **function** for A into B and we write f : A->B.

## Check: What is Range of Function; What are the different types of functions ; Domain and Range worked out problem

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