Example
In the cookie factory, the production function is
$$ q \left( K, L \right) = K L^2 $$The marginal product of labor is
$$ MP_L = \frac{d q \left( K, L \right)}{d L} = 2 K L $$Question
In the cookie factory, the production function is `q \left( K, L \right) = K^{94} L^{80}`.
What is the marginal product of labor?
$$
MP_L = \frac{d q \left( K, L \right)}{d L} = \frac{d K^{94} L^{80}}{d L} = 80 K^{94} L^{80 - 1} = 80 K^{94} L^{79}
$$