Precalculus: Functions


Problems

Problem : Let set A = {1, 2, 3} and set B = {4, 5} . What is their Cartesian product A×B ?


Problem : What is the Cartesian product of the set of real numbers and itself?


Problem : What is the Cartesian product of the set of positive real numbers with itself?


Problem : What is the domain and range of the relation {(2, 4),(4, 8),(8, 16)} ?


Problem : What is the domain and range of the relation y = ± ?


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