Answer: Give a recursive definition of each of these sets
Chapter 4, Problem 4.3.28(choose chapter or problem)
Give a recursive definition of each of these sets of ordered pairs of positive integers. [Hint: Plot the points in the set in the plane and look for lines containing points in the set.] a) S = {(a, b) I a E Z+, bE Z+ , and a + b is odd} b) S = {(a, b)la E Z+ , b E Z+ , and alb} c) S = {(a, b) I a E Z+, b E Z+ , and 31 a + b)
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