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st: RE: Bessel

Subject   st: RE: Bessel
Date   Fri, 30 Sep 2005 19:44:14 EDT

To be more specific, has anyone  made a Bessel of the 2nd kind function in 
Stata? An approximation is  sqrt(1.5708/x) * sin(x-0.7854(2y+1)) for values 
closer to the max values  and
-[ (2^n)(n-1)! /pi ] * x^(-n) for values closer to 0. If someone has a  
better approximation, or the "exact" function in Stata, I'd love to see  it.  

Joe Hilbe  

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