- #1

- 8

- 0

Well, I'm just wandering why the domain of the composite functions is the union of the two functions domain and I think he said multiplied by the range of one of the functions(either inside or outside.

Basically, the books are not to in depth with this, and i think I need a description of the whole process with maybe a proof of why the range comes into play.(I'm thinking maybe it has to do with the way the inverse functions switch range and domain?)

thanks in advance.