[" 3.Three distinct points "A,B" and "C" are given in the "2" -dimensional coordinate plane such that the ratio of "],[" the distance of any one of them from the point "(1,0)" to the distance from the point "(-1,0)" is equal to "(1)/(3)],[" Then the circumcentre of the triangle "ABC" is at the point: "quad " [A]EEE "-2009(4,-1),144]],[[" (1) "((5)/(4),0)," (2) "((5)/(2),0)," (3) "((5)/(3),0)," (4) "0,0]]