You said:
> NOTE: In the following x and y are not
> necessarily the same as X1, X2 or Y as
> described in the Core posting. Each variable
> is, in turned, treated as the x and y
> in order to discover which is the otherwise
> unknown X1, X2 and Y.
This was the most confusing part of your note. I wonder if you'd
elaborate a bit more, maybe give an example. Then I'll go onto the rest
later.
..Lois Shawver
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%