The answers to exercises marked [BB] can he found in the Back of the Book.
Find Ac (with respect to U = R) in each of the following cases.
(a) [BB] A = (1, ∞) U (−∞. −2]
(b) A = (−3, ∞) ∩ (−∞, 4]
(c) A = {v ∈ R | x2 < −1}
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