Course: Math 20D
Title: Introduction to Differential Equations
Credit Hours: 4
Prerequisite: Math 20C (or Math 21C or Math31BH) with a grade of C- or better
Catalog Description: Ordinary differential equations: exact, separable, and linear; constant coefficients, undetermined coefficients, variations of parameters. Systems. Series solutions. Laplace transforms. Techniques for engineering sciences. Computing symbolic and graphical solutions using Matlab.
Textbook: Elementary Differential Equations, ninth edition, by William E. Boyce & Richard C. DiPrima; published by John Wiley & Sons, Inc.; 2009
Subject Material: We shall cover parts of Chapters 1, 2, 3, 5, 6 and 7 of Boyce & DiPrima. See the homework page for a complete listing of sections we will cover.
Calculators: Calculator use will not be permitted on exams. Graphing calculators (such as the TI-86 or TI-89) may prove useful in checking solutions to some of the homework problems, but they are not required for the course.
Homework: Homework will be assigned on the course homework page and should be completed by the discussion section on the indicated due date.   Your completed homework assignments should be submitted by the due time into the homework dropbox (located in the basement of AP&M) labeled 20D and your TA’s name. Your worst homework score will be dropped. Before you submit, make sure to staple your work and have your name, ID number and section number written clearly on top of the front page. Late homework will not be accepted.
Reading: Reading the sections of the textbook corresponding to the assigned homework exercises is considered part of the homework assignment; you are responsible for material in the assigned reading whether or not it is discussed in the lecture.
MATLAB Lab Assignments: Math 20D has a computational component based on MATLAB. There will be four (4) MATLAB assignments and there will be a MATLAB final quiz. Assignments and due dates are posted on the Math 20D MATLAB page. Your MATLAB lab assignment grade will be based on the best three (3) of four (4) MATLAB lab assignments and the MATLAB final quiz. No late MATLAB lab assignments will be accepted.
Midterm Exams: There will be two (2) midterm exams. (See also the course calendar). You may bring a ONE SIDED 8.5 by 11 inch handwritten sheet of notes with you to each midterm exam. No calculators will be allowed. There will be no makeup exams.
Final Exam: The final examination will be held at the following date and time.
Regrades: Midterm exams will be returned in the discussion sections. If you wish to have your exam regraded, you must observe the following rules:
Grading: Your course grade will be determined by your cumulative average at the end of the term and will be based on the following scale:
Academic Dishonesty: Academic dishonesty is considered a serious offense at UCSD. Students caught cheating will face an administrative sanction which may include suspension or expulsion from the university. It is in your best interest to maintain your integrity.