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Math Help - limit question

  1. #1
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    limit question

    limit question-screen-shot-2012-12-09-4.52.49-pm.png

    how would you tackle this question?
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  2. #2
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    Re: limit question

    Quote Originally Posted by kingsolomonsgrave View Post
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    how would you tackle this question?

    \sqrt{x^2+1}-{x}=\frac{1}{\sqrt{x^2+1}+{x}}.
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  3. #3
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    Re: limit question

    I see, so first rationalize the expression and then divide by the highest power in the denominator giving \frac{1}{2}
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    Re: limit question

    Quote Originally Posted by kingsolomonsgrave View Post
    I see, so first rationalize the expression and then divide by the highest power in the denominator giving \frac{1}{2}

    No. The answer is 0.
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