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st: RE: Bessel
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.
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