Another limsup and lim inf question

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SUMMARY

This discussion centers on the properties of limits superior (lim sup) and limits inferior (lim inf) in the context of sequences. Specifically, it addresses the implications of the statements regarding lim sup and lim inf for the products of sequences, particularly when one sequence approaches a limit L. The key conclusions are that if lim sup(bn) < b, then lim sup(anbn) ≤ L * lim sup(bn), and that lim sup(anbn) = L * lim sup(bn) implies lim inf(anbn) = L * lim inf(bn).

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Ed Quanta
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So suppose an approaches L,

then how do I know that the statement

1)If lim supbn<b, then limsup(anbn)<Lb

implies that

limsup(anbn)<=L*limsup(bn)

is true?


2)How do I know that

limsup(anbn)=L*limsup(bn)

implies

liminf(anbn)=L*liminf(bn)

is true?
 
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i suggest you go back and read what some of us said in answer to your previous post. you want to get some skill with this idea yourself. the methods are the same.
 
Thanks dude. I'll look back.
 

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