The most commonly used mathematical methods in economics relate to optimization problems, and this course focuses on methods of optimization.

The first part of the course develops some basic mathematical tools of analysis which we will use to solve optimization problems. This covers roughly parts II and III of the text, and may include excerpts from part VI. The second part (part IV of the text) covers classical, calculus-based methods of optimization---Lagrange multipliers and the Kuhn-Tucker theorem. The methods of Lagrange and Kuhn-Tucker have been invaluable in solving many of the problems you will typically encounter in economics (consumer and producer choice, social welfare max, etc.). The remainder of the course covers more advanced topics from Parts VII and V of the text. These include the issue of whether an optimization problem actually has a solution, and a look at economic dynamics. If time, we will look at dynamic optimiation.

Office Hours and Contact Info

Regular office hours are 12:00-1:15 and 3:00-4:00 on Monday and Wednesday. I am also available immediately after class. I will be happy to make an appointment for another time if that is more convenient. My office is DM-311A, my phone number is 348-3287, and my email is <boydj@fiu.edu>.

Class Times

The class meets Monday, Wednesday, and Friday from 2:00pm to 2:50pm in CP-103.

Textbooks

Simon and Blume's book is the main text. I plan to cover Parts II-IV and VII of Simon and Blume, with some excerpts from Part VI. Time permitting, we will then turn our attention to Part V and dynamic models.

Exams and Homework

Grades will be based on two in-class midterm exams (worth 25% each), a final exam (40%), and homework assignments (10%). In addition to being announced in class, homework assignments will be posted on the class web page.

Exams

There will be two midterm exams, each worth 25% of your grade, and a final, worth 40% of your grade.

Sample Exams

Here are some previous midterm exams from this course. Note that some questions may not be relevant.

Homework Assignments and Answers

  1. Problems 6.2, 6.3, 7.15, 7.21, and 7.28 were due on Friday, September 2. Here are the answers.
  2. Problems 8.35, 9.12, 9.16, 10.21, and 11.3 were due on Wednesday, September 14. Here are the answers.
  3. Problems 11.14, 12.6, 12.9, 12.15, and 12.18 were due on Wednesday, September 21. Here are the answers.
  4. Problems 13.12, 13.21, 14.7, 14.12, and 14.26. were due on Friday, October 7. Here are the answers.
  5. Problems 15.1, 15.7, 15.13, and 15.21. were due on Friday, October 14. Here are the answers.
  6. Problems 16.2, 16.6, 17.1, 17.4, and 18.2. were due on Friday, October 21. Here are the answers.
  7. Problems 18.4, 18.9, 18.13, 19.3, and 19.18. were due on Monday, October 31. Here are the answers.
  8. Problems 23.5, 23.7, 23.12, 23.21, and 23.22. were due on Wednesday, November 21. Here are the answers.

Answers will be posted sometime after the homework is collected.

Tentative Schedule of Chapters

This schedule is subject to change.

Aug. 22 6: Intro to Linear Algebra (and use in Economics)
Aug. 24, 26 7: Linear Systems
Aug. 29 8: Matrix Algebra
Aug. 31 9: Determinants & some of 26: Determinants
Sept. 2 10: Euclidean Spaces
Sept. 5 Labor Day Holiday (no class)
Sept. 7 10: Euclidean Spaces (continued)
Sept. 9, 12 11: Linear Independence, Bases
Sept. 14, 16 12: Limits and Open Sets
Sept. 19 29: Limits and Compact Sets + Weierstrass Thm (Chap. 30)
Sept 21 13: Functions of Several Variables
Sept, 23 14: Calculus of Several Variables
Sept. 26 Exam #1 — through Chapter 12
Sept. 28, 30 14: Calculus of Several Variables (continued)
Oct. 3, 5 15: Implicit Functions and their Derivatives
Oct. 7, 10 16: Quadratic Forms and Definite Matrices
Oct. 12 17: Unconstrained Optimization
Oct. 14 30: Calculus of Several Variables II
Oct. 17, 19 18: Constrained Optimization I: First-order Conditions
Oct. 21, 24, 26 19: Constrained Optimization II
Oct. 26, 28 20: Homogeneous and Homothetic Functions
Oct. 31, Nov. 2 21: Concave and Quasiconcave Functions
Nov. 4, 7 22: Economic Applications
Nov. 9 Exam #2 — Chapters 13-21
Nov. 11 Veteran's Day Holiday (no class)
Nov. 14, 16, 18 23: Eigenvalues and Eigenvectors
Nov. 21, 23 24: Ordinary Differential Equations: Scalar Equations
Nov. 25 Thanksgiving Holiday (no class)
Nov. 28, 30, Dec. 2 25: Ordinary Differential Equations: Systems of Equations
Dec. 7 Final Exam at 12 noon in CP-103