Monday, 3 June 2019

real analysis - Necessary and sufficient condition for the existence of limntoinftyan

Let {an} be a sequence of real numbers. Then what should be a necessary and sufficient condition for the existence of limnan?



P.S.- The condition should be in terms of existence of other limits, for example, it exists if limna2n and limna3n both exist, say...

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real analysis - How to find limhrightarrow0fracsin(ha)h

How to find limh0sin(ha)h without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...