eva12
  • eva12
1. why is the sequence bounded at 3? 2+((-1)^n/n) help please
Mathematics
jamiebookeater
  • jamiebookeater
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xapproachesinfinity
  • xapproachesinfinity
look for the limit
eva12
  • eva12
\[2+\frac{ -1^n }{ n }\le3\]
xapproachesinfinity
  • xapproachesinfinity
yes you would need to prove that! formally you need to show that for any n \(A_n\le 3\)

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xapproachesinfinity
  • xapproachesinfinity
with the limit as n goes to oo of A_n=3 this shows that all values of A_n do not exceed 3
eva12
  • eva12
the limit is 2 when n goes to infinity , okay I understand it now thank you =)
xapproachesinfinity
  • xapproachesinfinity
oh yeah right, i thought it was 3
xapproachesinfinity
  • xapproachesinfinity
ok so what have you thought about so far?
xapproachesinfinity
  • xapproachesinfinity
how do we prove that inequality
eva12
  • eva12
I think we prove a set and the set must be bounded
xapproachesinfinity
  • xapproachesinfinity
what set?

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