O = Intersect(xAxis, yAxis)
A: (0, 1)
B: (2 / 3, 1)
D: (1, 0)
f = OrthogonalLine(D, xAxis)
b_0(t) = (1 - t)^(3)
b_1(t) = ((3 * (1 - t)^(2)) * t)
yc = 0.4 (slider from -0.5 to 2, step 0.1)
C: (1, yc)
b_2(t) = ((3 * (1 - t)) * t^(2))
b_3(t) = t^(3)
c = Circle(O, A)
g = Segment(A, B)
C_K: (1, 0.5)
a = CurveCartesian((1 / (1 + t^(2)) * (0 + (2 / 3 * b_1(t)) + (4 / 3 * b_2(t)) + (2 * b_3(t)))), (1 / (1 + t^(2)) * (b_0(t) + b_1(t) + ((y(C) * 4 / 3) * b_2(t)) + 0)), t, -10, 10)