Math 20D (Introduction to Differential Equations)


Upcoming scheduled events:


Quick links: Homework Assignments, MATLAB Assignments.


Course Description and Prerequisites

Description: Infinite series. Ordinary differential equations: exact, separable, and linear; constant coefficients, undetermined coefficients, variations of parameters. Series solutions. Systems, Laplace transforms, technique for engineering sciences. Computing symbolic and graphical solutions using Matlab. Formerly numbered Math. 21D. May be taken as repeat credit for Math. 21D. Math. 20C (or Math. 21C) with a grade of C- or better.

Prerequisites: It is strongly suggested that students be familiar with the material from MATH 20A, 20B, and 20C or equivalent courses.

Staff

Instructor

Name Office Office hours Telephone E-mail
Carl FitzGerald AP&M 5260 MW 1:30–3 (858)534-3961 (x43961) cfitzgerald@ucsd.edu

Teaching Assistants

Name Office Office hours Telephone E-mail
Jake Wildstrom AP&M 5301 F1-4, M10-1, T10-1 N/A dwildstr@math.ucsd.edu
Mike Kinnally AP&M 2325 MW1-2, T11-1 N/A mkinnall@math.ucsd.edu
Danny McAllaster AP&M B301 MW10-11, TR11-12 N/A dmcallas@math.ucsd.edu

Textbooks

Class, section, and lab times and locations

Section number Instruction Time Location Instructor
A00 Lecture MWF 9 PCYNH 106 Prof. FitzGerald
A01 Discussion Section R 8 WLH 2112 Mike Kinnally
A02 Discussion Section R 9 WLH 2112 Mike Kinnally
A03 Discussion Section R 10 WLH 2112 Jake Wildstrom
A04 Discussion Section R 11 WLH 2112 Jake Wildstrom
A05 Discussion Section R 12 WLH 2112 Danny McAllaster
A06 Discussion Section R 1 WLH 2112 Danny McAllaster
A50 Lab Section T 8 AP&M B337–349 Mike Kinnally
A51 Lab Section T 9 AP&M B337–349 Mike Kinnally
A52 Lab Section T 10 CLICS Mezzanine Jake Wildstrom
A53 Lab Section T 11 CLICS Mezzanine Jake Wildstrom
A54 Lab Section T 12 CLICS Mezzanine Danny McAllaster
A55 Lab Section T 1 CLICS Mezzanine Danny McAllaster

Policies

Grading

MATLAB assignments and homework each make up 10% of your grade. Each midterm examination will make up 20%, and the final examination will make up 40%.

MATLAB

The MATLAB assignments are a required part of the course. MATLAB sections meet on Tuesday from 8 AM to 2 PM (see times and locations above). Your assigned lab section is at the same time as your discussion section; however, if you are unable to make one lab section you are free to attend another as long as there are sufficient workstations. You may do the MATLAB assignments either during the section hours or on your own time, however, you use versions of MATLAB other than those in the assigned lab at your own risk. MATLAB assignments are due before 2 PM each Thursday.

Homework

The regular homework can be done with other students or with the help of other people; but the student should understand what he or she is handing in. In particular, a direct copy of someone else's work is not acceptable. The homework sets are due before 2 PM each Thursday.

Examinations

The midterm and the final examinations are closed-book, except for a formula sheet made by each student. The sheet may be 8.5 by 11 inches, and both sides may be used. No lecture notes or calculators are to be used. During the examination, cellphones must be turned off and put away. If a problem is unclear or wrong, please consult the instructor or a TA. If a student misses a midterm examination for a valid reason, either the student will be required to take a make-up examination or the other grades will be more heavily weighted, at the discretion of the instructor.

Cheating

Academic dishonesty is unethical, unprofessional, and considered to be a serious matter at UCSD. A student who cheats will be reported to the administration, and may be subject to a grade of F in the course, suspension, or expulsion from the university.

Homework Assignments

Assignment #1

From Stewart:

Assignment #2

From Stewart:

Assignment #3

You should know and be able to recognize the Maclaurin expansions listed at the bottom of page 767 of Stewart. In addition, you should know the Maclaurin expansions of log(1+x) and (1+x)b where b is a real number. Further, you should be able to apply these formulas in a slightly varied form; for example, you should be able to find the Maclaurin expansion of f(x)=2/(4+3x) easily.

From Stewart:

From Conrad:

Assignment #4

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Assignment #5

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Assignment #6

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Assignment #7

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Assignment #8

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Assignment #9

From Conrad:


Last updated: November 27th, 2005.

If there are any errors or omissions on this web page, please contact Jake.

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