(7) Let S = {1- (-1)" | neN}. Determine inf S and sup S. Justify. n
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Help me answer number 7 only.
Transcribed Image Text:(6) Let A be a bounded set of real numbers. Show that both l.u.b. A and g.l.b. A are in cl A. However, show that
each of these need not necessarily be an accumulation point of A.
(7) Let S = { 1 − (−1)″ | n € N}. Determine inf S and sup S. Justify.
n
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