Mathematics, 23.01.2020 20:31 Sawyer4648
Let a and b be subsets of r. (a) if x ∈ (a ∩ b)c, explain why x ∈ ac ∪ bc. this shows that (a ∩ b)c ⊆ ac ∪ bc. 12 chapter 1. the real numbers (b) prove the reverse inclusion (a ∩ b)c ⊇ ac ∪ bc, and conclude that (a ∩ b)c = ac ∪ bc. (c) show (a ∪ b)c = ac ∩ bc by demonstrating inclusion both ways.
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Let a and b be subsets of r. (a) if x ∈ (a ∩ b)c, explain why x ∈ ac ∪ bc. this shows that (a ∩ b)c...
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