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When L'Hopital's Rule fails

  1. Sep 17, 2007 #1
    I'm suppose to find the limit as x goes to infinity of [(9x + 1) ^ (1/2)] / [(x+1) ^ (1/2)].

    L'Hopital's Rule does not work on here (it said so even in the directions) as the function keeps on cycling.

    ...they gave us the answer (3) but I need to find out how.

  2. jcsd
  3. Sep 17, 2007 #2

    Figured it out.

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