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Math Help - Limits

  1. #1
    Newbie
    Joined
    Feb 2007
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    5

    Limits

    Hi All,
    Can anyone help me to solve this...........


    Find:
    Lim 23x3 + 45x
    x 78x3 + 9




    Thanks
    -Arun
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  2. #2
    Super Member

    Joined
    May 2006
    From
    Lexington, MA (USA)
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    Hello, Arun!


    . . . . . 23x + 45x
    . lim . --------------
    x→∞ . .78x + 9

    Divide numerator and denominator by x

    . . . . . 23 + 45/x . . . . . . . 23 + 0 . . . . 23
    . lim . ------------- . = . lim . --------- . = . ---
    x→∞ . 78 + 9/x . . . .x→∞ .78 + 0 . . . . 78

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