kartesischer Graph von r(x)

Polargraph von r(φ)

r_1(x) = 1.0 + 2.0 * sin(x / 2.0)
f = Function(r_1(x), 0.0, 6.283185307179586)
A = Point(f)
a = CurveCartesian(r_1(t) * cos(t), r_1(t) * sin(t), t, 0.0, 6.283185307179586)
B: (r_1(x(A)) * cos(x(A)), r_1(x(A)) * sin(x(A)))
r = Vector((0.0, 0.0), B)
φ = Angle((x(A), 0.0), (0.0, 0.0), B)
phi = Vector((0.0, 0.0), (x(A), 0.0))
radius = Vector((x(A), 0.0), A)
P: A