4. LR and SR: Returns to Scale and Diminishing Returns Q- LaK > Consider a general Cobb-Douglas production function with inputs L and K: Q(L, K) = L°K» (a > 0, b > 0) a. Multiply each input quantity by a parameter j> 1 to derive conditions on parameters a & b for which the production function exhibits: Constant returns to scale (RTS): Increasing RTS: Decreasing RTS: b. Write expressions for the marginal products of labor and capital. Verify that both marginal products are positive for all levels of production. 9-1 MPL = a L MPK = bL c. Find the derivative of MPL with respect to L and the derivative of MPx with respect to K, and find their signs (> 0 or < 0). OMPL/ÖL = ala-1) L K5 OMPK/ÖK b (b-1) La K b-2 %3D d. Find the conditions on parameters a and b to ensure diminishing marginal products of L and K. a

ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN:9780190931919
Author:NEWNAN
Publisher:NEWNAN
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
icon
Related questions
Question
Am I moving in the correct direction I’m a bit confused as to what I am being asked to produce
Re
4. LR and SR: Returns to Scale and Diminishing Returns
Q= Lakb
> Consider a general Cobb-Douglas production function with inputs L and K:
Q(L, K) = L°K» (a > 0, b > 0)
a. Multiply each input quantity by a parameter j > 1 to derive conditions on
parameters a & b for which the production function exhibits:
9.
Constant returns to scale (RTS): .
Increasing RTS:
Decreasing RTS:
2k'3
b. Write expressions for the marginal products of labor and capital. Verify that both
marginal products are positive for all levels of production.
-1
MPL = a L
2 la
b-1
MPK =
To
c. Find the derivative of MPL with respect to L and the derivative of MPK with respect
to K, and find their signs (> 0 or < 0) .
OMPL/OL =
a(a-1) L"
a -2
ÕMPK/ÖK = _b (b-1) La
b-2
K
d. Find the conditions on parameters a and b to ensure diminishing marginal
products of L and K.
a
e. Find, compare, and interpret the signs of the cross-partial derivatives-the
derivative of MPL with respect to K and the derivative of MPK with respect to L.
ÕMPL/SK =
OMPK/ÖL =
MOND
BARD WELL
Suppose that in
f. The short run produ
1000
g. Find conditions on paramet
Linear:
6)
Transcribed Image Text:Re 4. LR and SR: Returns to Scale and Diminishing Returns Q= Lakb > Consider a general Cobb-Douglas production function with inputs L and K: Q(L, K) = L°K» (a > 0, b > 0) a. Multiply each input quantity by a parameter j > 1 to derive conditions on parameters a & b for which the production function exhibits: 9. Constant returns to scale (RTS): . Increasing RTS: Decreasing RTS: 2k'3 b. Write expressions for the marginal products of labor and capital. Verify that both marginal products are positive for all levels of production. -1 MPL = a L 2 la b-1 MPK = To c. Find the derivative of MPL with respect to L and the derivative of MPK with respect to K, and find their signs (> 0 or < 0) . OMPL/OL = a(a-1) L" a -2 ÕMPK/ÖK = _b (b-1) La b-2 K d. Find the conditions on parameters a and b to ensure diminishing marginal products of L and K. a e. Find, compare, and interpret the signs of the cross-partial derivatives-the derivative of MPL with respect to K and the derivative of MPK with respect to L. ÕMPL/SK = OMPK/ÖL = MOND BARD WELL Suppose that in f. The short run produ 1000 g. Find conditions on paramet Linear: 6)
=16.97
Increading
TaL1)+ 2L1))
(4)"2
> Suppose that in the short run, input K is fixed at K = 400. Let b = ½.
f. The short run production function is therefore:
La 100
ソ。
Q(L) =
(a > 0)
%3D
Q= La k6
K=400
Q = L° VI00
b = ½
g. Find conditions on parameter a to make the short run production function:
Convex:
Concave:
Linear:
5. Health Expenditure, Nutrition, and Life Expectancy
Q = Q(K, L) = 2
> Let:
L = life expectancy in years
N = measure of average nutrition
H = per capita expenditures on health care
%3D
> The production function for life expectancy is: L= L(N, H) = 2NH
a. Does the production function show constant, increasing, or decreasing returns
scale? Show.
Constant
Transcribed Image Text:=16.97 Increading TaL1)+ 2L1)) (4)"2 > Suppose that in the short run, input K is fixed at K = 400. Let b = ½. f. The short run production function is therefore: La 100 ソ。 Q(L) = (a > 0) %3D Q= La k6 K=400 Q = L° VI00 b = ½ g. Find conditions on parameter a to make the short run production function: Convex: Concave: Linear: 5. Health Expenditure, Nutrition, and Life Expectancy Q = Q(K, L) = 2 > Let: L = life expectancy in years N = measure of average nutrition H = per capita expenditures on health care %3D > The production function for life expectancy is: L= L(N, H) = 2NH a. Does the production function show constant, increasing, or decreasing returns scale? Show. Constant
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 6 steps

Blurred answer
Knowledge Booster
Limited Cognitive Power
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, economics and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
ENGR.ECONOMIC ANALYSIS
ENGR.ECONOMIC ANALYSIS
Economics
ISBN:
9780190931919
Author:
NEWNAN
Publisher:
Oxford University Press
Principles of Economics (12th Edition)
Principles of Economics (12th Edition)
Economics
ISBN:
9780134078779
Author:
Karl E. Case, Ray C. Fair, Sharon E. Oster
Publisher:
PEARSON
Engineering Economy (17th Edition)
Engineering Economy (17th Edition)
Economics
ISBN:
9780134870069
Author:
William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
Publisher:
PEARSON
Principles of Economics (MindTap Course List)
Principles of Economics (MindTap Course List)
Economics
ISBN:
9781305585126
Author:
N. Gregory Mankiw
Publisher:
Cengage Learning
Managerial Economics: A Problem Solving Approach
Managerial Economics: A Problem Solving Approach
Economics
ISBN:
9781337106665
Author:
Luke M. Froeb, Brian T. McCann, Michael R. Ward, Mike Shor
Publisher:
Cengage Learning
Managerial Economics & Business Strategy (Mcgraw-…
Managerial Economics & Business Strategy (Mcgraw-…
Economics
ISBN:
9781259290619
Author:
Michael Baye, Jeff Prince
Publisher:
McGraw-Hill Education