This question focuses on labour productivity, labour demand, and generally on the production function. Assume that the Aggregate Production Function is represented by the following equation:

Y=KANBN+CL

Ystands for output,Kstands for the capital stock,Nstands for the number of people employed,Lstands for the quantity of land used in production,AandBstand for measures of labour efficiency, andCfor a measure of land efficiency.is a parameter whose value is between 0 and 1,andare parameters whose values are1.

(a) Derive the formulas for:

- the marginal product of labor (MPN).

- the marginal product of capital (MPK). - the marginal product of land (MPL).