A firm has the production function y = x1 + min{x1, x2}.
(a) Draw three isoquants for this firm.
(b) Does this firm have constant returns to scale?
(c) Suppose the firm is operating at the point x1 = 10 and x2 = 5. What is the marginal product of x1? What is the marginal product of x2? (d) What are the marginal products of x1 and x2 at the point x1 = 5 and x2 = 10?