The production function has the property constant returns to scale: Changing all inputs by the same percentage causes output to change by that percentage. Doubling all inputs (multiplying each by 2) causes output to double: 2Y = A F(2L, 2K, 2H, 2N)Increasing all inputs 10% (multiplying each by 1.1) causes output to increase by 10%: 1.1Y = A F(1.1L, 1.1K, 1.1H, 1.1N)