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Limit with Factorials

  1. Apr 8, 2010 #1
    Anyone know of any method to evaluate this limit,

    [tex]\lim_{n \to \infty} \frac{n!}{\left(\frac{n+p}{2}\right)!\left(\frac{n-p}{2}\right)!}2^{-n}[/tex]

    it seems to go to zero, but I have no way to be sure.
     
  2. jcsd
  3. Apr 8, 2010 #2

    Hurkyl

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    What did you get from Stirling's approximation?
     
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