need to prove theres limit by cauchy criterion(adsbygoogle = window.adsbygoogle || []).push({});

http://mathworld.wolfram.com/CauchyCriterion.html

the sequence: {X_n}=(10/1)(11/3).....(n+9/2n-1)

my try :

is that right ?

http://img155.imageshack.us/my.php?image=22221wl0.jpg

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# Cauchy Criterion for Series limit

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