Date: Jun 6, 2013 9:20 AM
Author: Narasimham
Subject: Conic eccentricity through five points

Find eccentricity of a conic in terms of 5 points (x1,y1) to (x5,y5).( as there are 5 constants in  a x^2 + 2 h x y + b y^2 + 2 f x + 2 g y  = 1 )

TIA
Narasimham