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Math Help - sequence!

  1. #1
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    sequence!

    evaluate  lim \sqrt{n}(\sqrt{n+1}-\sqrt{n}) as n tends to infinite

    a problem like the above, how can one begin?

    pls help
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  2. #2
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    Crna Gora
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    Re: sequence!

    Hint :

    Multiply expression by :

    \frac{\sqrt{n+1}+\sqrt n}{\sqrt{n+1}+\sqrt n}
    Thanks from lawochekel
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