Lecture Notes1 Microeconomic Theory, Study notes of Economics

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Lecture Notes1
Microeconomic Theory
Guoqiang TIAN
Department of Economics
Texas A&M University
College Station, Texas 77843
August, 2002/Revised: January 2018
1This lecture notes are for the purpose of my teaching and convenience of my students in
class.
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Lecture Notes^1

Microeconomic Theory

Guoqiang TIAN

Department of Economics

Texas A&M University

College Station, Texas 77843

([email protected])

August, 2002/Revised: January 2018

(^1) This lecture notes are for the purpose of my teaching and convenience of my students in class.

Contents

Chapter 1

Preliminaries on Modern

Economics and Mathematics

In this chapter, we first set out some basic preliminaries and methodologies im- posed in modern economics in general and in the lecture notes in particular. We will discuss the basic terminologies used in modern economics, its research ob- ject of market system and its common ground with ancient Chinese economic thoughts, key assumptions, standard analytical framework, methodologies and techniques, as well as some key points one should pay attention to. The method- ologies for studying modern economics and key points include: providing bench- mark, establishing reference system, setting up studying platforms, developing analytical tools, making positive and normative analysis, noting the basic re- quirements, role, generality and limitation of an economic theory, distinguishing necessary and sufficient conditions for a statement, understanding the role of mathematics, and grasping the conversion between economic and mathematical language. We will then discuss some basic mathematics preliminaries and results that will be used in the lecture notes.

1.1 Nature of Modern Economics

1.1.1 Modern Economics and Economic Theory

  • What is economics about? Economics is a social science that studies how to make decisions in face of scarce resources. Specifically, it studies individuals’ economic behavior, economic phenomena, as well as how individual agents, such as consumers, families, firm- s, organizations and government agencies, make trade-off choices that allocate limited resources among competing uses. It is actually this fundamental inconsistence/conflict between individuals’ un- limited desires (i.e., wants) and scarce/limited resources that leads to economics. The core idea throughout economics is that under the basic constraint of limited resources (limited information, limited capital, limited time, limited capacity and limited freedom) versus unlimited desires of people, individuals must make best trade-off choices in resource allocation to make the best of limited resources for maximizing the satisfaction of individuals’ needs.
  • Four basic questions must be answered by any economic institution: (1) What goods and services should be produced and in what quan- tity? (2) How should the product be produced? (3) For whom should it be produced and how should it be distributed? (4) Who makes the decision?

Whether an institution can well answer these questions depends on the funda- mental factors of whether it can properly solve the information and incentive problems.

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