Show that the two-input CES production(attached) has DRS, CRS, or IRS depending on whether B (beta) is smaller than, equal, or greater than 1.

Microeconomic Theory
12th Edition
ISBN:9781337517942
Author:NICHOLSON
Publisher:NICHOLSON
Chapter9: Production Functions
Section: Chapter Questions
Problem 9.5P
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Show that the two-input CES production(attached) has DRS, CRS, or IRS depending on whether B (beta) is smaller than, equal, or greater than 1.

Another popular, and useful, production function is the CES (for Constant Elasticity of
Substitution) production function:
f(x1, x2) = A(ax + (1 – a))8/P,
where A, B > 0, 0 < a < 1, and 0 p < 1. It is easy to check that f as given above is
continuous, strictly increasing for r1, x2 > 0, and strictly quasiconcave for 1, T2 > 0.
For the CES we can find
TRS(x) = (a/(1- a))(x2/x1)'-P.
%3D
Transcribed Image Text:Another popular, and useful, production function is the CES (for Constant Elasticity of Substitution) production function: f(x1, x2) = A(ax + (1 – a))8/P, where A, B > 0, 0 < a < 1, and 0 p < 1. It is easy to check that f as given above is continuous, strictly increasing for r1, x2 > 0, and strictly quasiconcave for 1, T2 > 0. For the CES we can find TRS(x) = (a/(1- a))(x2/x1)'-P. %3D
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