The production function is f(K,N) = N/2 + √ K, where N is the
amount of labor used and K the amount of capital used. (a) What is
returns to scale of this production function? What is the marginal
product of labor? (b) In the short run, K¯ = 4. Labor is variable.
On the graph, draw output as a function of labor input in the short
run in blue. Draw the marginal product of labor as a function of...