Graph

f(x) = 0.5 * x^(2.0)
a = false
A_1 = (2, 9)
B_1 = (2, -9)
b = Segment(A_1, B_1)
C_1 = (-3, 9)
D_1 = (-3, -9)
c = Segment(C_1, D_1)
E = (-1, 9)
F = (-1, -9)
d = Segment(E, F)
G = (4, 9)
H = (4, -9)
e = Segment(G, H)
A = Point(c)
B = Point(d)
C = Point(b)
D = Point(e)