f(x) = 0.7 * sin(0.45 * π * x)
g(x) = 0.7 * sin(0.45 * π * x - 0.13 * π)
h(x) = 0.7 * sin(0.45 * π * x - 0.26 * π)
t = 0.54 (slider from -5 to 5, step 0.01)
S(x) = 0.7 * sin(0.45 * π * x - 1.3 * π * t)