sry, I don't do word
I haven't paid for it, so I can't even open this up
In the attached file, I've included a formula with beta and gammaln which has been rewritten for easier implementation in Excel. I get most of the rewriting, however I don't understand how multiplying A1, A2 and A4 yields the second part of the formula (the part after the + sign). Could anyone please help me with this? Any help would be much appreciated!