Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Another limit problem

  1. Feb 25, 2008 #1
    lim sqrt(x^2 + x) - x as x approaches infinity

    Not sure what I need to do. I tried to make it into a fraction so I could apply L'Hospital's rule but I didnt' get anywhere with that. Any ideas?
     
  2. jcsd
  3. Feb 25, 2008 #2

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    [tex]1=\frac{\sqrt{x^{2}+x}+x}{\sqrt{x^{2}+x}+x}[/tex]
     
  4. Feb 25, 2008 #3
    Yeah like arildno suggested you need to rationalize the expression by multiplying with what post #2 suggests!
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Another limit problem
  1. Another limit problem. (Replies: 3)

  2. Yet another limit (Replies: 4)

  3. Limit Problem (Replies: 5)

  4. Problem with limit (Replies: 4)

Loading...