Answer is: option2
\( -16 \)Solution:
\( f'(x) = 1 \cdot g(h(x)) + x \cdot g'(h(x)) \cdot h'(x) \)
\( f'(3) = g(h(3)) + 3 \cdot g'(h(3)) \cdot h'(3) \)
\( f'(3) = g(4) + 3 \cdot g'(4) \cdot (-2) \)
\( f'(3) = 2 + 3 \cdot 3 \cdot (-2) \)
\( f'(3) = 2 - 18 \)
\( f'(3) = -16 \, \text{Ans} \)