Katica

Katica a létrán...

b = 0.267 (slider from 0 to 20, step 0.001)
B: (0, b)
c = Circle(B, 20)
D, A = Intersect(c, xAxis)
l = Segment(B, A)
u = Vector(A, B)
C = Intersect(xAxis, yAxis)
v = Vector(C, A)
g: v + (1 / 3 * u)
K = Translate(C, g)
ellipszis: (9 / 4 * x^(2)) + (9 * y^(2)) = 400