1. Sep 27, 2012 #1

   Bashyboy

   

   1. The problem statement, all variables and given/known data
   [itex]a_n = \frac{(2n -1)!}{(2n)^n}[/itex]
   
   
   2. Relevant equations
   
   
   
   3. The attempt at a solution
   I am not exactly sure how to solve this problem.

    

   Bashyboy, Sep 27, 2012
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3. Sep 27, 2012 #2

   Ray Vickson

   

   Science Advisor

   Homework Helper

   What are you supposed to do with a_n? Find its limit? Sum it?
   
   RGV

    

   Ray Vickson, Sep 27, 2012
4. Sep 27, 2012 #3

   Bashyboy

   

   Oh, I am sorry that I did not specify. I need to take the limit as n goes to infinity of this sequence.

    

   Bashyboy, Sep 27, 2012
5. Sep 28, 2012 #4

   Bashyboy

   

   Does it seem, to anyone, that I have left any more information out?

    

   Bashyboy, Sep 28, 2012
6. Sep 29, 2012 #5

   ag3287

   

   Hint: Try looking at a bound....what's it greater than, or what's it less than. Then take the limit of that, you should have your answer.

    

   ag3287, Sep 29, 2012

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