Unformatted text preview: D q = (1 / 2q, 1 / 2 + q ). Find [ q ∈ Q D q and ± q ∈ Q D q . (b) For each q ∈ Q , let K q = Rr { q } . Find [ q ∈ Q K q and ± q ∈ Q K q . Question 4. Let A and B be any sets. Prove that P ( A ) ∪ P ( B ) ⊆ P ( A ∪ B ) . 1...
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 Spring '08
 ctw
 Math, Sets, Following, kq

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