3. Suppose A and B are non-empty sets of real numbers that are both bounded above....

3. Suppose A and B are non-empty sets of real numbers that are both bounded above.

(a) Prove that, if A ⊆ B, then supA ≤ supB.

(b) Prove that supA∪B = max{supA,supB}.

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Expert Solution

Colby Messinger answered 1 year ago

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