A firm's production function is q = 2KL. What is the marginal product of capital?
A) 2L
B) 2K/L
C) 2K
D) 0.5L
Ans: A) 2L
Marginal product of capital is equal to the derivative of the production function with respect to the capital, therefore, the right answer is option A, that is, 2L as derivative of the production function with respect to capital is equal to 2L.
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