visualizza onde circolari

c = 2 (slider from 0 to 10, step 0.1)
F_1: (c, 0)
F_2: (-c, 0)
λ = 0.2 (slider from 0.1 to 2 * c, step 0.01)
lista2 = Sequence((x + c)^(2) + y^(2) = (i * λ)^(2), i, 1, 50)
lista1 = Sequence((x - c)^(2) + y^(2) = (i * λ)^(2), i, 1, 50)
a = true
lista3 = Sequence(Hyperbola[F_1, F_2, 1 / 2 * λ * n], n, 0, floor(2 * c / λ))