Assignment:
Q1. What does f: Z----> Z or f: A--->A or f: N--->N mean? Are these the set of integers, natural numbers or any set in general (it is not the complex set)?
Q2. If I have:
Let A = {n:n>2} f: A--->A followed by some function does this mean A is a set of n integers?
Provide complete and step by step solution for the question and show calculations and use formulas.