Mathematics · Real Analysis
Let S = {1/m + 1/n : m, n ∈ N}, then __________.
- 1Sup S = 1 and inf S = 0.
- 2Sup S = 2 and inf S does not exist.
- 3Sup S does not exist, and inf S = 0.
- 4Sup S = 2 and inf S = 0.✓
Correct answer
Sup S = 2 and inf S = 0.
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