Question

If a firm has the production function f(L,K) =(L+1)K, and currently uses no units of labor,...

If a firm has the production function f(L,K) =(L+1)K, and currently uses no units of labor, but K=3 units of capital, what is its marginal rate of substitution?Aretherevaluesofwandrsuchthatthischoiceoffactorinputs is optimal?

Homework Answers

Answer #1

i)Give production function f(L,K) = (L+1)K

therefore, Marginal rate of labour or MRL = f(L,K)/L = K

Also Marginal rate of capital or MRK = f(L,K)/K = L+1

Therefore marginal rate of technical substitution is MRK/ MRL = (L+1)/K= (0+1)/3 = 1/3 ( since K=3 and L = 0)

ii) Putting the values of K and L in the production function, we get,

f(L,K) = (0+1).3 = 3 which is value of capital (K) used. Therefore, input values of labour and capital are optimal.

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