A similar production function for New South Wales in Australia is z = Cx^0.65y^0.35, with x, y, z, and C as in Exercise 53. Find the marginal productivity of labor and of capital.

Exercise 53

The production function z for the United States was once estimated as z = Cx^0.75y^0.25, where x stands for the amount of labor and y the amount of capital and C is a constant. Find the marginal productivity of labor and of capital.