Another limsup and lim inf question

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The discussion revolves around the relationships between limits and the implications of lim sup and lim inf in sequences. It questions how the condition that if lim sup bn < b leads to lim sup(anbn) < Lb implies lim sup(anbn) ≤ L * lim sup(bn). Additionally, it explores the implication that lim sup(anbn) = L * lim sup(bn) leads to lim inf(anbn) = L * lim inf(bn). The participants emphasize the importance of understanding these concepts and suggest revisiting previous discussions for clarity. Mastery of these ideas is deemed essential for further exploration.
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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