Hello,
I'm working on the beta distribution for Calc. In the case
BETADIST(x,1,b,0,1,FALSE()), which is the beta distribution density
function, the term b*(1-x)^(b-1) has to be calculated. The domain for x
is 0<=x<=1. There is no problem for x<0.99. But you get large relative
errors for x near 1. Is there any trick for calculating such a term in
this case?
Using the power series -(x+1/2x^2+1/3x^3+...) for log(1-x) is no
solution because of its very very bad convergence for x near 1.
kind regard
Regina
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