PROBLEMS/SITUATIONS: 1. Assume you spend your entire income on two goods X & Y with prices given as PX & PY, respectively. Prices and income (I) are exogenous and positive. Given that U = X2+ Y2 derive the Marshallian demand function for good Y and evaluate the type of good.    2. Assume you spend your entire income on two goods X & Y with prices given as PX & PY , respectively. Prices and income (I) are exogenous and positive. Given that U = X2 Y2 , derive the Hicksian demand function for good Y.

ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN:9780190931919
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Chapter1: Making Economics Decisions
Section: Chapter Questions
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PROBLEMS/SITUATIONS:

1. Assume you spend your entire income on two goods X & Y with prices given as PX & PY, respectively. Prices and income (I) are exogenous and positive. Given that U = X2+ Y2 derive the Marshallian demand function for good Y and evaluate the type of good. 

 

2. Assume you spend your entire income on two goods X & Y with prices given as PX & PY , respectively. Prices and income (I) are exogenous and positive. Given that U = X2 Y2 , derive the Hicksian demand function for good Y. 

 

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Question 2
optimum condition
MRS=Px/Py
MRS=MUx/MUy
MUx=d(U)/dX
MUy=d(U)/dY
U=x2y2
Hicksian demand function is uncompensated demand function which represent the minimization of budget for given utility level.
MUx=2XY2
MUy=2x?Y
MRS=2XY2/2X2Y
MRS=Y/X
At optimum condition
Y/X=Px/Py
Y=X*Px/Py
By substituting into constant utility constraint
U°=x?y2
U0-x2•(x*Px/Py)?
X=(U°)/4/(Px/Py)1/2
By substituting value of X
Y=X*Px/Py
Y=(U°)4/4/(Px/Py)/2+Px/Py
Y=(U9a/4/(Py/Px)1/2
X=(U°)1/4*(Py/Px)1/2---- Hicksian demand function for X
Y=X=(U°)1/4*(Px/Py)1/2..Hicksian demand function for Y
Transcribed Image Text:Question 2 optimum condition MRS=Px/Py MRS=MUx/MUy MUx=d(U)/dX MUy=d(U)/dY U=x2y2 Hicksian demand function is uncompensated demand function which represent the minimization of budget for given utility level. MUx=2XY2 MUy=2x?Y MRS=2XY2/2X2Y MRS=Y/X At optimum condition Y/X=Px/Py Y=X*Px/Py By substituting into constant utility constraint U°=x?y2 U0-x2•(x*Px/Py)? X=(U°)/4/(Px/Py)1/2 By substituting value of X Y=X*Px/Py Y=(U°)4/4/(Px/Py)/2+Px/Py Y=(U9a/4/(Py/Px)1/2 X=(U°)1/4*(Py/Px)1/2---- Hicksian demand function for X Y=X=(U°)1/4*(Px/Py)1/2..Hicksian demand function for Y
Question 1
optimum condition
MRS=Px/Py
MRS=MUx/MUy
MUx=d(U)/dX
MUy=d(U)/dY
U=x2+y2
MUx=2X
MUy=2Y
Optimum condition
2X/2Y=Px/Py
X=Y*Px/Py
Budget constraint
M=Px*X+Py*Y
By substituting value
M=Px*Y*Px/Py+Py*Y
Y=M/[P?x/Py+Py]
Transcribed Image Text:Question 1 optimum condition MRS=Px/Py MRS=MUx/MUy MUx=d(U)/dX MUy=d(U)/dY U=x2+y2 MUx=2X MUy=2Y Optimum condition 2X/2Y=Px/Py X=Y*Px/Py Budget constraint M=Px*X+Py*Y By substituting value M=Px*Y*Px/Py+Py*Y Y=M/[P?x/Py+Py]
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