If , where is a constant, is the demand equation for a manufacturer's product and defines a function that gives the total number of units produced per day by employees, show that the marginal revenue product is always zero.

If m employees, show that the marginal revenue product is always zero.q=f(m) defines a function that gives the total number of units produced per day by k is a constant, is the demand equation for a manufacturer's product and p=k/q , where