t = 10.4 (slider from 0 to 50, step 0.1)
T = 11.5 (slider from 4 to 20, step 0.5)
c = 0.6 (slider from 0.1 to 3, step 0.1)
n = 1
liste1 = Sequence(exp(-(t - x / c - n * T)^(2.0)) + 0.2, n, 1.0, 10.0)
f = Sum(liste1)
liste2 = Sequence(exp(-(t + x / c - n * T)^(2.0)) - 0.2, n, 1.0, 10.0)
g = Sum(liste2)
s(x) = g(x) + f(x)
A = Point(s)