Welcome to the permanent home page for Section ES31 of MATH-2200 (Differential Equations) at Southeast Community College in the Spring term of 2021. I am Toby Bartels, your instructor.

Course administration

Contact information:


The official textbook for the course is the 11th Edition of A First Course in Differential Equations with Modeling Applications by Dennis Zill published by Cengage.


  1. Introduction:
  2. Initial examples:
  3. Solution curves:
  4. First-order linear equations:
  5. Numerical solutions:
  6. Models:
Quiz 1, covering the material in Problem Sets 1–6, is on February 16 Tuesday.

Linear equations

  1. Higher-order equations:
  2. More TBA.


  1. Basics:
  2. More TBA.

Final exam

A comprehensive final exam is on December 16 Wednesday from 9:00 to 10:40, or whenever you schedule with me to take it by December 17 Thursday. The exam will consist of questions similar in style and content to those in the practice final exam.
This web page and the files linked from it were written by Toby Bartels, last edited on 2021 February 22. Toby reserves no legal rights to them.

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