Question
1. Let A = { a, c, e, h, k }, B = { a, b, d, e, h, i, k, l }, and C
1. Let A = {a, c, e, h, k}, B = {a, b, d, e, h, i, k, l}, and C = {a, c, e, i, m}. Find each of the following sets.
(a) A B
(b) A B C
(c) A C
(d) A B C
(e) A B
(f) A (B C)
2. Prove or disprove that if A, B, and C are sets then A (B C) = (A B) (A C).
3. Let f(n) = 2n + 1. Is f a one-to-one function from the set of integers to the set of integers? Is f an onto function from the set of integers to the set of integers? Explain the reasons behind your answers.
4. Suppose that f is the function from the set {a, b, c, d} to itself with f(a) = d, f(b) = a, f(c) = b, f(d) = c. Find the inverse of f.
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