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The codomain doesn't have to equal the image. The image is the non-zero reals, but the codomain could be any superset of it (including all of R). The word "rang
by ogogmad 6y ago
The codomain doesn't have to equal the image. The image is the non-zero reals, but the codomain could be any superset of it (including all of R). The word "range" is ambiguous.
- ragnese 6y agoThank you. I've forgotten some of the terminology, since I haven't thought about real math in a few years. :(