iii) lim sup (x₂) = 1. Observe that {n} is a bounded sequence. • Explain why Conclude that lim sup (n) = sup S lim sup (n) = 1.
iii) lim sup (x₂) = 1. Observe that {n} is a bounded sequence. • Explain why Conclude that lim sup (n) = sup S lim sup (n) = 1.
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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Transcribed Image Text:iii) lim sup (n)
Observe that {n} is a bounded sequence.
• Explain why
= 1.
Conclude that
lim sup (n) = sup S
lim sup (n) = 1.
Expert Solution

Step 1: The limit superior is the largest limit point
- According to the question The notation
represents the limit superior of a sequence
The limit superior is the largest limit point or accumulation point of the sequence. In your case, it's given that
Bounded Sequence: we observed that
is a bounded sequence. This means that there exists a real number M such that for all n in the sequence, we have
In other words, the values in the sequence
do not grow arbitrarily large; they are bounded above by
Definition of Limit Superior: The limit superior of a sequence
is the supremum (sup) of the set S, where S consists of all the limit points of the sequence. A limit point is a real number L such that for any
, there exists an N such that for all
In simpler terms, it's a point that the sequence gets arbitrarily close to as n becomes large.
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