1. Find the sup and inf of the following sets. {1/n :n e N} • {2 – 1/n :n € N}. • {e";r € Q}.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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1. Find the sup and inf of the following sets.
• {1/n :n € N}
• {2 – 1/n : n € N}.
• {e";r € Q}.
• {r² : 0 < x < 2}.
• n(1 – 1/n, 2+ 1/n) where n e N
• U[1/n, n] where n e N.
Transcribed Image Text:1. Find the sup and inf of the following sets. • {1/n :n € N} • {2 – 1/n : n € N}. • {e";r € Q}. • {r² : 0 < x < 2}. • n(1 – 1/n, 2+ 1/n) where n e N • U[1/n, n] where n e N.
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