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

Homework Help: Limit laws

  1. Sep 24, 2008 #1
    1. The problem statement, all variables and given/known data

    24wrpfq.png

    2. Relevant equations



    3. The attempt at a solution


    2mzjmes.jpg
     
  2. jcsd
  3. Sep 24, 2008 #2

    gabbagabbahey

    User Avatar
    Homework Helper
    Gold Member

    If you know how to do a taylor series expansion, try expanding [tex]x \sqrt{1+a/x}[/tex] and [tex]x \sqrt{1+b/x}[/tex] about (1/x) =0 . You'll find that the zero order terms will cancel each other, terms higher than first order will be zero i the limit x->infty and you will be left with (a-b)/2.
     
  4. Sep 24, 2008 #3
    thank you :O it was right.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook