Let f and g be the functions in the table below.

Question

x f(x) g(x) f '(x) g'(x)
1 3 2 4 6
2 1 3 5 7
3 2 1 7 9

(a) If F(x) = f(f(x)), find F '(2).

(b) If G(x) = g(g(x)), find G '(1).

I know I probably have to use the chain rule. But how?

Answer 1

I figured it out. Thanks, though.