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Math Help - Determine the boundedness

  1. #1
    Senior Member
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    Determine the boundedness

    Determine the boundness and monotonicity of the sequence a_n

    n^2/\sqrt{n^3+1}

    and

    (-2)^n/n^{10}

    to find the monotonicity, I know there are two ways i know, either show a_{n+1}/a_n >1 or show the derivative of the corresponding function is increasing or decreasing, but both way seem not working out.
    Last edited by wopashui; March 6th 2010 at 04:16 PM.
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