Economics 351x:  Fall 2019

Professor Anthony M. Marino
Department of Finance and
Business Economics, Marshall School of Business

Course Information

Textbook:

The recommended textbook for our class is Microeconomics for Business (Fourth Custom Edition for USC). The text contains 15 chapters from the book Microeconomics by Pindyck and Rubinfeld, 9th edition, and 3 chapters from the book Microeconomics by Hubbard and O’Brien, 6th edition. Earlier editions of this custom book would be fine for use in the course. Also, earlier editions of the Pindyck and Rubinfeld book would also be fine for use in the course.

I provide book chapter type lecture notes in the form of online pdf files. The text is expensive, so that those who would like to save money might consider buying an older edition of Pindyck and Rubinfeld online.  The three chapters from Hubbard can be skipped, as they cover background material which is discussed in my lecture notes.

The lecture notes for the course will be available on my web page in pdf form (password protected). Below you will find links to each of the lecture notes in the list of topics. You can download the entire manuscript complete with a mathematical appendix here Microeconomics for Business Decisions Marino 2019.pdf

Grading Scheme, Contact Information, and Web Page Address:

1. Your grade will be based on the following scheme:

SE1 = 25, SE2 = 22, SE3 = 20, FE = 33.

For this case, the sum of your 4 scores is 100. If we drop the lowest of the three section exams and weigh the final at 60 (= 35 + 25) points, your score is

25 + 22 + (33/35) 60 = 25 + 22 + 56.6 = 103.6.

Because 103.6  > 100, your point total for the course is 103.6.

2.  Office Hours: Tuesday and Thursday 2-3:30 pm.

814 Hoffman Hall
(213) 740-6525
(213) 740-6650 FAX
e-mail:  amarino@usc.edu
web page:  http://faculty.marshall.usc.edu/Anthony-Marino/ or http://faculty.marshall.usc.edu/Anthony-Marino/main.html (the second version has no frames)

Topics and Readings

Lecture 1. Introduction: Principles of Business Economics LN 1.

1.1 Economic models

1.2 The Market System

1.3 Supply and Demand Analysis: The Firm and Markets

Lecture 2. A Mathematics Review: Marginal Functions, Average Functions, Elasticity, and Notes on Optimization LN 2.

2.1 Introduction

2.2 The Basic Problem

2.3 The Marginal or Derivative Function and Optimization

2.4 The Average Function

2.5 Elasticity

Lecture 3. Consumer Behavior Theory: The Foundation for Demand, the Firm’s Revenue and Marketing LN 3.

3.1 Choice and Utility

3.2 The Budget Constraint

3.3 The Consumer’s Equilibrium and Derivation of Individual Demand with Applications to (i) Subsidizing Employee Housing, (ii) Nonlinear pricing and Business Revenue Enhancement, and (iii) The Effects of Business Taxes on Consumers

3.4 Market Demand for Goods and Services  

3.5 Price and Income Elasticities of Demand and Implications for the Firm’s Revenue

3.6 The Law of Demand

3.7 Intertemporal Consumption Choice: Saving, Borrowing and Financing

Lecture 4. Two topics in Consumer Theory as Applied to Business LN 4

4.1 Consumer Surplus: A Proxy for Consumer Utility

4.2 Forecasting Demand for a Firm’s Product

4.3 Using Regression Estimates to Make Predictions for the Firm

Lecture 5. Choice under Uncertainty  LN 5.

5.1 Introduction

5.2 A Model of Choice with Uncertainty: The Notion of Risk Aversion in Finance

5.3 Reducing Risk in Business

Lecture 6. Production and the Link to the Firm’s Cost Function: An Operations Management Problem LN 6

6.1 Introduction

6.2 The Production Function

6.3 Average Product, Marginal Product and Input Elasticity

6.4 Isoquants and the MRTS

6.5 The Link between Production and Cost

Appendix on Labor Productivity

Lecture 7. Short-run and Long-run Costs for the Firm  LN 7.

7.1 Introduction

7.2 Short-run Cost

7.3 Average and Marginal Costs

7.4 Long-run Costs

7.5 Real World Examples from the Business World

Lecture 8. Perfect Competition and the Firm’s Decision Making LN 8.

8.1 Introduction

8.2 Short-run Profit Maximization

8.3 Long-run Profit Maximization

8.4 Competitive Input Demand

8.5 Social Welfare with Perfect Competition and the Effects of Government Controls on a Competitive Market

Lecture 9. Pure Monopoly and the Firm’s Decision Making  LN 9

9.1 Introduction

9.2 The Monopolist’s Profit Maximizing Equilibrium

9.3 The Deadweight Loss of Monopoly and Price Regulation

9.4 Monopsony, Labor Unions and Government Regulation in Monopsony

Lecture 10. A Business Firm’s Pricing Strategy with Monopoly Power LN 10.

10.1 Introduction

10.2  General Price Discrimination: Perfect Price Discrimination, Second Degree Price Discrimination, Third Degree Price Discrimination, Intertemporal Price Discrimination, Two Part Tariffs, Bundling and Tying  

Lecture 11. Monopolistic Competition, Oligopoly and the Firm’s Decision Making LN 11.

11.1 Introduction

11.2 Monopolistic Competition

11.3 Oligopoly

Lecture 12. Business Applications of Game Theory LN 12.

12.1 Introduction

12.2 Dominant Strategy Equilibrium

12.3 Nash Equilibrium

12.4 Strategic Moves

12.5 Auctions

Lecture 13. Asymmetric Information in Markets for Commodities and Within Firms LN 13

13.1 Introduction

13.2 Asymmetric Information in Markets

13.3 The Principal-Agent Problem within Organizations: An Introduction to Human Resource Decisions

13.4 Remarks on Information Economics

Lecture 14. Externalities, Public Goods and Government’s Interface with Business LN 14.

14.1 Introduction

14.2 Externalities

14.3 Pollution Abatement

14.4 Externalities and Property Rights

14.5 Private versus Public Provision of Public Goods

Tentative Schedule  

Session

Date

Topic

Book Chapters

Marino Lecture Notes

1 T

8/27

Methodology, The Market System, Supply and Demand

Ch1,4                  

LN1

2 Th

8/29

Supply and Demand and Math Review

Ch1,4                  

LN1, LN2

3 T

9/3

Math Review, Demand

Ch5      

LN2, LN3

4 Th

9/5

Demand

Ch5, Ch6                     

LN3

5 T

9/10

Demand

Ch6                     

LN3

6 Th

9/12

Consumer Theory Topics

Ch6 

LN4

7 T

9/17

Consumer Theory Topics, Uncertainty

Ch6, Ch7 

LN4, LN5

8 Th

9/19

Section Exam 1******

 

 

9 T

9/24

Uncertainty, Production

Ch7, Ch8              

LN5, LN6

10 Th

9/26

Production, Cost

Ch8, Ch9           

LN6, LN7

11 T

10/1

Cost

Ch9

LN7

12 Th

10/3

Perfect Competition

Ch10

LN8

13 T

10/8

Perfect Competition

Ch10,Ch11,Ch16             

LN8

14 Th

10/10

Perfect Competition

Ch11 

LN8

15 T

10/15

Section Exam 2******

 

 

16 Th

10/17

Monopoly

Ch12                     

LN9

17 T

10/22

Monopoly

Ch12                     

LN9

18 Th

10/24

Monopsony and Pricing

Ch12,Ch13,Ch16                        

LN9, LN10

19 T

10/29

Pricing

Ch13                       

LN10

20 Th

10/31

Oligopoly

Ch14                     

LN11

21 T

11/5

Oligopoly

Ch14                     

LN11

22 Th

11/7

Oligopoly

Ch14                     

LN11

23 T

11/12

Games and Competitive Strategy

Ch15 

LN12

24 Th

11/14

Section Exam 3******

 

 

25 T

11/19

Games and Competitive Strategy, Auctions

Ch15

LN12

26 Th

11/21

Auctions, Asymmetric Information

Ch15, Ch17

LN12, LN13

27 T

11/26

Asymmetric Information, Externalities and Public Goods

Ch17, Ch 18

LN13, LN14

28 T

12/3

Externalities and Public Goods

Ch18

LN14

29 Th

12/5

Review  ******

******

******

 

Course Description.

The main goal of this course is to show how microeconomic models can be used to guide business decisions. This is a course designed for business majors, with key departures from standard introductory microeconomics courses. We will study the behavior of consumers and firms, and their implications for demand, supply and market equilibrium. We will analyze competitive markets, market failures, and the role of government. To reflect rising concentration in markets we will spend some time on the implications of market power on firm pricing decisions and profits. The course also introduces basic principles of game theory and competitive strategy.

This course is designed to prepare students for future business courses, including finance, marketing, and strategy. The models, methods, and case studies have been selected with a focus on business relevant applications. For example, the economics of consumer choice underlies much of modern marketing strategy, including pricing, segmentation and advertising. The theory of the firm contributes to a sound understanding of cost accounting as well as production decisions. Economic analysis of intertemporal decisions and behavior in a risky environment form the foundation of finance. Finally, the study of market failure and industrial structure is necessary for an understanding of government's role in a market economy and the political environment for business.

More generally, this course provides a rigorous foundation for the study of decision making problems within firms. The student who successfully completes this course should be able to apply microeconomic analysis to issues of real world interest within the firm. 

Slides

LN1

LN2

LN3

LN4

LN5

LN6

LN7

LN8

LN9

LN10

LN11

LN12

LN13

LN14

Practice Exams

SE1, SE1.1

SE2, SE2.1

SE3, SE3.1

F

Study Guide for Final Exam