ECON 325, IO (Fall 08)
Christoph Luelfesmann, SFU
December 10, 2008
Final Exam Econ 325
Please answer all of the questions below.
Shorter Questions [50 points]
1. Consider a spatial model of price competition. What is the equilibrium eect of
higher transp
ECON 325, IO (Fall 08)
Christoph Luelfesmann, SFU
October 16, 2008
Midterm Exam Econ 325
Please answer all of the questions below.
Shorter Questions [30 points]
1. What is the denition of Pareto eciency? Using this denition, show precisely
why the standar
ECON 325, IO (Spring 2014)
Christoph Luelfesmann, SFU
Homework Assignment #2
1.) Please answer Problem 1, p. 109 PRN. In your answer, focus on First
degree and Third degree price discrimination. Short but precise answer ok.
2.) Please solve Problem 1, p.
ECON 325, IO (Fall 2012)
Christoph Luelfesmann, SFU
Homework Assignment #2
1.) Please answer Problem 1, p. 109 PRN. In your answer, focus on First
degree and Third degree price discrimination. Short but precise answer ok.
2.) Please solve Problem 1, p. 12
ECON 325, IO (Fall 2005)
Christoph Luelfesmann, SFU
Homework Assignment #2
This assignment is due on Friday, Oct 14 in class. 1.) Please answer Problem 1, p. 109 [Problem 1, p. 151 in the 2nd ed.] In your answer, focus on First degree and Third degree pri
ECON 325, IO (Spring 2014)
Christoph Luelfesmann, SFU
Homework Assignment #1
1.) Please answer Problem 3 on p.42 in Pepall-Richards-Norman (PRN).
2.) Please solve Problem 4 on p.42 in PRN.
3.) Read about the Tyco case (p. 29) and then solve Problem 5, p.
ECON 325, IO (Fall 2011)
Christoph Luelfesmann, SFU
Homework Assignment #2
1.) Please answer Problem 1, p. 109 PRN. In your answer, focus on First
degree and Third degree price discrimination. Short but precise answer ok.
2.) Please solve Problem 1, p. 12
ECON 325, IO (Spring 2014)
Christoph Luelfesmann, SFU
Answer Key to Assignment #1
1.) Please answer Problem 3, p. 43 in the book by Pepall-Richards-Norman
(PRN).
Answer: Easy to nd out, and the text already provides the correct answers.
2.) Please solve P
ECON 325, IO (Fall 2011)
Christoph Luelfesmann, SFU
Answer Key to Assignment #2
1.) Please answer Problem 1, p.109. In your answer, focus on 1rd and 3rd
degree price discrimination. Short but precise answer ok.
Suggested Answer:
We discussed the eciency p
ECON 325, IO (Fall 2011)
Christoph Llfesmann, SFU
u
Homework Assignment #3
1.) Please solve Problem 5, p. 221 PRN.
2.) There are two industries A and B, and each industry is a duopoly. The
rms in industry A are identical. They face an inverse demand , PA
ECON 325, IO (Fall 2012)
Christoph Luelfesmann, SFU
Answer Key to Assignment #2
1.) Please answer Problem 1, p.109. In your answer, focus on 1rd and 3rd
degree price discrimination. Short but precise answer ok.
Suggested Answer:
We discussed the eciency p
ECON 325, IO (Spring 2014)
Christoph Luelfesmann, SFU
Answer Key to Assignment #2
1.) Please answer Problem 1, p.109. In your answer, focus on 1rd and 3rd
degree price discrimination. Short but precise answer ok.
Suggested Answer:
We discussed the eciency
Department of Economics
Simon Fraser University
ECON 325
Spring 2015
Final Exam
Time: 3:30 6:30 PM
Answer all 7 questions in the booklet provided.
Show all work. Answers without calculations/explanations will receive no credit.
Good Luck!
1. Consider a
ECON 325, IO (Fall 2011)
Christoph Luelfesmann, SFU
Answer Key to Assignment #1
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1.) Please answer Problem 3, p. 43 in the book by Pepall-Richards-Norman
(PRN).
Answer: Easy to find out, and the tex
ECON 325, IO (Fall 2011)
Christoph Luelfesmann, SFU
December 17, 2011
Final Exam Econ 325 Answer Key to LP1 a-b
Long Problem 1 [30 points]
Consider two rms, A and B.
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a) Each rm A and B can deliver
ECON 325, IO (Fall 2011)
Christoph Luelfesmann, SFU
Answer Key to Assignment #2
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1.) Please answer Problem 1, p.109. In your answer, focus on 1rd and 3rd
degree price discrimination. Short but preci
ECON 325, IO (Fall 2012)
Christoph Luelfesmann, SFU
Answer Key to Assignment #1
1.) Please answer Problem 3, p. 43 in the book by Pepall-Richards-Norman
(PRN).
Answer: Easy to nd out, and the text already provides the correct answers.
2.) Please solve Pro
ECON 325, IO (Fall 2011)
Christoph Luelfesmann, SFU
Answer Key to Assignment #1
1.) Please answer Problem 3, p. 43 in the book by Pepall-Richards-Norman
(PRN).
Answer: Easy to nd out, and the text already provides the correct answers.
2.) Please solve Pro
ECON 325, IO (Fall 2005)
Christoph Llfesmann, SFU u
Homework Assignment #3
This assignment is due on Wednesday, Nov 2 in class. 1.) Please solve Problem 1, p.224 [Problem 1, p. 277 in 2nd ed.] Explain carefully. 2.) There are two industries A and B, and e
ECON 325, IO (Fall 2012)
Christoph Luelfesmann, SFU
Answer Key to Assignment #5
Exercise 1.
Answer:
a) Straightforward (and therefore omitted).
b) Splitting the money cannot occur in Nash equilibrium: if player 1 leaves
the money on the table, player 2s b
ECON 325, IO (Spring 2014)
Christoph Luelfesmann, SFU
Answer Key to Assignment #4
Exercise 1.
Answer:
In the unique Nash equilibrium, both Springs set a price of 4, and realize
prots of 32. To show this, note that if Southern chooses a price of 3,
Norther
ECON 325, IO (Spring 2014)
Christoph Luelfesmann, SFU
Answer Key Assignment #3
Problem 1.)
Answer:
From the lecture, we know that the Cournot solution with N identical rms
C
will be symmetric, and each rm i produces qi = (Ac)/(N +1)B. Inserting
C
the numb
ECON 325, IO (Fall 2012)
Christoph Luelfesmann, SFU
Answer Key to Assignment #4
Exercise 1.
Answer:
In the unique Nash equilibrium, both Springs set a price of 4, and realize
prots of 32. To show this, note that if Southern chooses a price of 3,
Northerns
ECON 325, IO (Fall 2012)
Christoph Luelfesmann, SFU
Answer Key Assignment #3
Problem 1.)
Answer:
From the lecture, we know that the Cournot solution with N identical rms
C
will be symmetric, and each rm i produces qi = (Ac)/(N +1)B. Inserting
C
the number
ECON 325, IO (Fall 2011)
Christoph Luelfesmann, SFU
Answer Key Assignment #3
Problem 1.)
Answer:
From the lecture, we know that the Cournot solution with N identical rms
C
will be symmetric, and each rm i produces qi = (Ac)/(N +1)B. Inserting
C
the number
ECON 325, IO (Fall 2011)
Christoph Luelfesmann, SFU
Answer Key to Assignment #5
Exercise 1.
Answer:
a) Straightforward (and therefore omitted).
b) Splitting the money cannot occur in Nash equilibrium: if player 1 leaves
the money on the table, player 2s b
Socially Optimal Extraction
Suppose Bq Uq where p U q is societys inverse demand for the resource
product. The socially optimal extraction plan satisfies
U q C q
t
t
A for t 0, 1, 2, . . . T
1 r t
q q q . . . q S
0
1
2
T1
q q max
T
UqCq
where q max maxi
Optimal Extraction from a Single Mine
Suppose there is a single mine with reserves of S tonnes. Let r be the owners
discount rate and q t be the amount extracted in period t and suppose extraction takes
place in periods t 0, 1, . . . , T 1. Let Bq t be th
ECON 325, IO (Fall 2011)
Christoph L
ulfesmann, SFU
Homework Assignment #3
1.) Please solve Problem 5, p. 221 PRN.
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2.) There are two industries A and B, and each industry is a duopoly. The
firms in