(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

how do show whether the following sequences are bounded?

1) {an}=sqrt(n)/1000

2) {an}=(-2n^2)/(4n^2 -1)

3) {an}=n/(2^n)

4) {an}=(ncos(npi))/2^n

2. Relevant equations

i have to show whether the sequences are bounded by a number but i dont know how to find that number. for part (4) i have to use the sandwich theorem.

3. The attempt at a solution

1) it's not bounded since it will continue to increase to infinity.

but i dont know how to do the rest. can someone help please?

thank you very much

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# Homework Help: Bounded sequences

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