BM> RI_Part := Exp((NS - 1) * Ln(RI));
BM> PD_Part := PD / P(2 * NS -1);
BM> Inv_NS := 1 / NS;
BM> RC := Exp(Inv_NS * Ln(RI_Part * PD_Part));
BM> That is much easier to maintain than trying to keep all the 
BM> parenthesesstraight in the original equation (not to mention the 
BM> lousy variablenaming in the original as well).  Just because one 
BM> _can_ cram everything
BM> into one equation doesn't mean that one _should_ do it.
Here..here! And with todays optimizing complilers, It will probably nice and 
efficient in the final result anyway.  
Steve
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