Question

魚婷

請問a、b怎麼做
謝謝

(a) If g is a twice differentiable function and f(x) = xg(x?), find
f" in terms of g, g', and g".
()
=
If F(x) = f(xf(xf(x))), where f(1) = 2, f (2) = 3,
f'(1) = 4, f'(2) = 5, and f'(3) = 6, find F'(1).