f(x) = 3.0 * (x - 4.0)^(2.0) + 2.0
S_2 = (4, 2)
g(x) = -2.0 * (x + 3.0)^(2.0) + 4.0
S_1 = (-3, 4)
h(x) = 4.0 * (x - 2.0)^(2.0) - 3.0
S_4 = (2, -3)
i(x) = -1.0 * 1.5 * (x - 4.0)^(2.0) + 1.0
S_3 = (4, 1)
j(x) = x^(2.0)
S = (0, 0)