 \vec{ u } 

 \vec{ v } 

O = Intersect(xAxis, yAxis)
U = Point(xAxis)
V = Point(yAxis)
u = Vector(O, U)
v = Vector(O, V)
f(x) = x / (x - 1)
M = Point(f)
i = (0, 1)
z: x(M) + y(M) * i
M': z^(2) - 2 * (1 + i) * z