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eva12

  • one year ago

1. why is the sequence bounded at 3? 2+((-1)^n/n) help please

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  1. xapproachesinfinity
    • one year ago
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    look for the limit

  2. eva12
    • one year ago
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    \[2+\frac{ -1^n }{ n }\le3\]

  3. xapproachesinfinity
    • one year ago
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    yes you would need to prove that! formally you need to show that for any n \(A_n\le 3\)

  4. xapproachesinfinity
    • one year ago
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    with the limit as n goes to oo of A_n=3 this shows that all values of A_n do not exceed 3

  5. eva12
    • one year ago
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    the limit is 2 when n goes to infinity , okay I understand it now thank you =)

  6. xapproachesinfinity
    • one year ago
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    oh yeah right, i thought it was 3

  7. xapproachesinfinity
    • one year ago
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    ok so what have you thought about so far?

  8. xapproachesinfinity
    • one year ago
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    how do we prove that inequality

  9. eva12
    • one year ago
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    I think we prove a set and the set must be bounded

  10. xapproachesinfinity
    • one year ago
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    what set?

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