Prove that for any bounded sequences (xn) and yn we have lim sup(xn + Yn) < lim sup(xn) + lim sup(yn). Give an example that shows that equality may not hold. What is the corresponding inequality for lim inf?
Prove that for any bounded sequences (xn) and yn we have lim sup(xn + Yn) < lim sup(xn) + lim sup(yn). Give an example that shows that equality may not hold. What is the corresponding inequality for lim inf?
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:Prove that for any bounded sequences (xn) and yn we have
lim sup(xn + Yn) < lim sup(xn) + lim sup(yn).
Give an example that shows that equality may not hold. What is the corresponding
inequality for lim inf?
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