a = -1.4
b = 1.6000000000000005
c = -0.09999999999999964
g(x) = a * x^(3.0) + b * x^(2.0) + c * x
g' = Derivative(g)
A = Point(g)
d = Tangent(A, g)
B = Point(g')
e = OrthogonalLine(B, xAxis)
h = OrthogonalLine(A, xAxis)
D = Point(h)
i = Ray(A, D)
C = Point(e)
f = Ray(B, C)