Question: Problem 5. Let U E R and S be a nonempty subset of R. Suppose that 'u E S and v is an upper bound

Problem 5. Let U E R and S be a nonempty

Problem 5. Let U E R and S be a nonempty subset of R. Suppose that 'u E S and v is an upper bound of S. Prove that sup(S) = v

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