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
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
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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Am I moving in the correct direction I’m a bit confused as to what I am being asked to produce

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)

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
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