Suppose that

f(1) = 2    f'(1) = 3    f(2) = 1    f'(2) = 2

g(1) = 3    g'(1) = 1   g(2) = 1    g'(2) = 4

(a) If S(x) = f (x) + g(x), find S'(1).

(b) If P(x) = f(x)g(x), find P'(2).

(c) If Q(x) = f(x)/g(x), find Q'(1).

(d) If C(x) = f(g(x)), find C'(2).