https://www.geogebra.org/haftendorn
Haftendorn, Buch (Springer):
Kurven erkunden und verstehen
Kap 9.3.3: S.273
www.kurven-erkunden-und-verstehen.de

Ha 2016

a: 1 / 4
g: y = (a * x^(2))
Q = Point(g)
s = -0.06
b = Tangent(Q, g)
c = OrthogonalLine(Q, b)
d: (y - 1 / ((2 * a)))^(3) = ((27 * a / 16) * x^(2))
e = CurveCartesian(((-4 * a^(2)) * t^(3)), ((3 * a) * t^(2)) + 1 / ((2 * a)), t, -5, 5)
M: (-2, 5)
S: (0, 2)
O = Point(g)
p = Circle(S, O)
C = Point(p)
D = Point(p)
q = CircleArc(S, C, D)
k = 5.7 (slider from -5 to 7, step 0.1)
r = Circle(Q, k)
A, B = Intersect(r, c)
i = false
Ortslinie6 = Locus(B, Q)