We say y is an output. Alternatively, we call y the image of x under f . The range is a subset of the codomain. It is the set of all elements which are assigned to at least one element of the domain by the function. That is, the range is the set of all outputs.
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Answer:
We say y is an output. Alternatively, we call y the image of x under f . The range is a subset of the codomain. It is the set of all elements which are assigned to at least one element of the domain by the function. That is, the range is the set of all outputs.