f(x) = (-x^(2) + 4 / 3 * x + 1) / (x - 3)
A = Point(f)
a = Tangent(A, f)
g(x) = -x^(3) - x^(2) + x + 3
B = Point(g)
b = Tangent(B, g)
d: g(2)
c: g(-3)
h(x) = 1 / 3 * x^(3) - x^(2) - 8 * x + 1 / 3
e: h(7)
C = Point(h)
j = Tangent(C, h)
i(x) = (x^(2) - 1 / 2 * x - 1) / (3 - 2 * x)
D = Point(i)
k = Tangent(D, i)