Consider a firm that has a Cobb-Douglas technology. The firm wishes to minimize the cost of producing y units of output and has access to perfectly competitive factor markets. The firm's cost minimization problem is given by: min wl +rk {k,l} s.t. k°18 = Y Let μ denote the Lagrange multiplier on the output constraint.

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 cost function is homogeneous of degree 1/(α+β) in output. 
How do the returns to scale (degree of homogeneity of the production function) relate to the properties
of the cost function? Does this make sense to you? Explain clearly why. 

Consider a firm that has a Cobb-Douglas technology. The firm wishes to minimize the cost of producing y
units of output and has access to perfectly competitive factor markets. The firm's cost minimization problem
is given by:
min wl +rk
{k,l}
s.t. k°18
= Y
Let μ denote the Lagrange multiplier on the output constraint.
Transcribed Image Text:Consider a firm that has a Cobb-Douglas technology. The firm wishes to minimize the cost of producing y units of output and has access to perfectly competitive factor markets. The firm's cost minimization problem is given by: min wl +rk {k,l} s.t. k°18 = Y Let μ denote the Lagrange multiplier on the output constraint.
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