Question

In: Economics

1. What do we mean by a "production function"? Interpret the following production functions. (a) Q...

1. What do we mean by a "production function"? Interpret the following production functions. (a) Q = 50L^3/4 K^1/4 (b) Q = 640K L^2-K^2L^3

Solutions

Expert Solution

PRODUCTION FUNCTION: It represents the functional relationship between the quantity of a good produced and factors of production or inputs. It tells us the maximum amount of output that can be produced with the amount of labor and capital.

(a) Q = 50L3/4 K1/4

Now,by doubling the inputs K and L ,we get,

= 50 (2L)3/4 (2K)1/4

= 50 (2)3/4 +1/4 L3/4 K1/4

= 2 (50 L3/4 K1/4) = 2 Q

This implies that dpubling the inputs K and L , doubles the output . It means increasing inputs K and L will increase the output by same amount . Therefore, this poduction function exhibits constant returns to scale.

(b) Q = 640 K L2 - K2 L3

Now, by doubling the inputs K and L , we get:

= 640 (2K) (2L)2 - (2K)2 (2L)3

= 640 (2)3 K L2 - (2)5 K2L3 > 2Q = 640 (2 K L2) - (K2 L3)

This implies that doubling inputs K and L , output will be more than double. This production function exhibits increasing returns to scale.

  


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