In a computation, I need
Log[Beta[alpha+j,beta-j+n]] of some kind.
Is there a
LogBeta function built-in to avoid any under/over flow problems?
There is one in R, called
I could rewrite them in terms of
Gamma functions and thus in terms of
LogGamma. But I am lazy. I search a bit for it, just can't seem to find it.
So Mathematica does not have it?
On a related matter,
Beta sometimes gives bad results, see here.