f(x) = ((-0.5) * x^(2))
a = Integral(f, 0, 4)
g(x) = (1 / 3 * x^(3)) - (3 * x)
b = Integral(g, 0, 2)
h(x) = cos(x)
c = Integral(h, 0, 2)
m(x) = x^(4) - (4 * x^(2)) + 3
d = Integral(m, 0, 1)
e = Integral(m, 1, 1.7320508075688772)
p(x) = (3 * x) - (0.5 * x^(2))
i = Integral(p, 0, 6)
q(x) = (3 * x) + (0.5 * x^(2))
j = Integral(q, -6, 0)