https://www.geogebra.org/haftendorn
Haftendorn, Buch (Springer):
Kurven erkunden und verstehen
Kap 5.1.2.1  S. 135
www.kurven-erkunden-und-verstehen.de

Ha 2017

deutsch-d-Kurve

b_2 = -6
B: (b_2, 0)
a = 4
A: (0, a)
w = Line(B, A)
c = 4
C: (c, 0)
d = Line(A, C)
D = Point(d)
Vieleck1, a_1, b_1, c_1 = Polygon(B, C, A)
O = (0, 0)
Q = Point(w)
f = Line(Q, C)
e = Line(Q, D)
E = Intersect(e, yAxis)
F = Intersect(f, yAxis)
g_F = Line(B, F)
g_E = Line(C, E)
G = Intersect(g_F, g_E)
i = Line(O, G)
P = Intersect(i, e)
Ortslinie1 = Locus(G, Q)
t = 0.1
Ortslinie2 = Locus(P, Q)
s: x(D)
Ortslinie3 = Locus(P, D)
m: ((5 * y(E)) * y(F) / (y(E) - y(F)) / 12)
ftest: (((-y(Q))) / (c - x(Q)) * (-c))
etest: ((y(D) - y(Q)) / (s - x(Q)) * (-s)) + y(D)
ttest: (((-a)) / c * s) + a
vtest: (a / b_2 * x(Q)) + a
o: ((10 * (-4 + s)^(2)) * x^(3)) + ((((9 * (-4 + s)) * s) * (-4 + y)^(2)) * y) + ((((4 * s) * x) * y) * (12 - (3 * s) - (3 * y) + ((7 * s) * y))) + (((-4 + s) * x^(2)) * ((60 * (-4 + y)) + (s * (60 + (29 * y))))) = 0
frei: ((((b_2^(2) * (c - s)) * s) * y) * ((a * (c - x)) - (c * y))^(2)) = ((((a * (b_2 - c)) * x) * (((a * (c - s)) * x) - ((c * s) * y))) * (((a * (c - s)) * (b_2 - x)) + ((c * ((-b_2) + s)) * y)))
b = false