> -----Original Message-----
> From: Robert Dodier [mailto:robert.dodier at gmail.com]
> We might want to try to get to the bottom of this. I'm guessing that
> the problem is ratsimp or factor or something which is not supposed
> to take too long. I suspect that the problem is not in the computation
> itself but in simplification of partial results or something
> like that.
Works treated as a matrice:
ss:matrix([1,x1,y1,x1^2,y1^2,x1*y1],[1,x2,y2,x2^2,y2^2,x2*y2],[1,x3,y3,x3^2,
y3^2,
x3*y3],[1,x4,y4,x4^2,y4^2,x4*y4],[1,x5,y5,x5^2,y5^2,x5*y5],[1,x6,y6,x6^2,
y6^2,x6*y6])
;
Invert(ss);
Answer omitted for the sake those with limited attention spans (me).
RayRogers