t = 2.74 (slider from 0 to (4 * π))
g(x) = sin((3 * x))
f(x) = (3 * cos(x))
a = CurveCartesian(f(v), g(v), v, t - 1, t)
A: a(t)
h(x) = (-2 * sin((3 * x)))
k(x) = (3 * sin((2 * x)))
b = CurveCartesian(h(v), k(v), v, t, t + 0.5)
B: b(t + 0.5)
l1: {(-3, 3)}
poly1, i, j, l, m = Polygon((-3, -3), (3, -3), (3, 3), (-3, 3))
l2 = Sequence(a(v), v, t - 1, t, 0.2)
l3 = Sequence(b(v), v, t, t + 0.5, 0.05)