If you bought the wrong book for this class (whether from the UMBC bookstore or an external vendor), then please provide Dean LaCourse at lacourse@umbc.edu with:

1. your name,
2. the amount of out-of-pocket expense.

UMBC bookstore textbook return rules

Monday, February 2nd is the last day to refund or exchange textbooks for the spring semester.

MATH 225-04 [4865], Spring 2015
Introduction to Differential Equations

Course information

Course:	MATH 225-04 [4865]: Introduction to Differential Equations
Time/Place:	TuTh 5:30pm-6:45pm, MP 104
Instructor:	Dr.  Jacob Kogan	Grader:	Rohiel Ahmad
Office:	MP 426		MP 422
Phone:	410-455-3297
Email:	kogan at math.umbc.edu		rohiel1@umbc.edu
Office hours:	TuTh 4:15 PM-5:15 PM, and by appointment		Th 1:30 pm- 2:30 pm

Textbook

Fundamentals of Differential Equations and Boundary Value Problems, 6/e by Nagle, Saff & Snider, Addison Wesley, 2011
(you may want to consult valorebooks and free download)
Additional Ordinary Differential Equations textbook you may want to consult:

• Elementary Differential Equations by William E. Boyce, Richard C. DiPrima
  [as of January 14, 2015 copies of the text are available at UMBC library, the call number is QA371.B77 1997]

Course Description

The subject of this is course is an introduction to ordinary differential equations and their applications. It's pretty much a natural continuation of calculus. Calculus II (Math 152) is a prerequisite. A knowledge of Linear Algebra (Math 221) is a great asset, but it's not a prerequisite.

We will try to cover the following material: Chapters 2, 4, 5-7.
We may cover these topics in a different order. Depending on time we may cover more (or delete) topics.

Learning Goals

• understand the key ideas, concept, definitions, and results,
• be able to apply theoretical results and computational algorithms to material realted problems.

• preview each section before it is covered in class,
• actively participate in each class,
• form and participate in a study group,
• to work out each problem, discuss it in study group if needed;
• do and hand in each assignment on time.

Helpful Material

• partial fractions
• first order differential equations
• second order differential equations
• Laplace Transform Table Boyd
• Laplace Transform Table Boyce, DiPrima

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  Homework, Quizzes, Tests, and Grading

  Homework
  • Weekly homework will be assigned on Thursday and collected the following Thursday.
  • The two lowest homework grades will be disregarded.
  • Please staple your homework, and present the problems in the order assigned, if you want credit.
  • No late homework will be accepted.
  Quizzes, Tests, and Grading

  The final grade will be based on homework grades (25 pt), three quizzes (25 pt each), and the comprehensive final (50 pt).

  Date	Points	Topic	Solutions
  Thursday, February 26	25 pt	Sec. 2.2-2.4, 2.6	solutions
  Tuesday, March 31	25 pt	Sec. 4.2-4.6	solutions
  Thursday, April 30	25 pt	Sec. 7.2-7.6 and 7.8	solutions
  Thursday, May 14	50 pt		final

  
  Final exam is scheduled for Thursday, May 14 from 6:00 pm through 8:00 pm in class. There will be no make up quizzes or tests. Letter grade cutoffs are expected to be the following:

  Percentage	≥ 90%	89% ≥ and ≥ 80%	79% ≥ and ≥ 70%	69% ≥ and ≥ 60%	59% ≥
  Letter Grade	A	B	C	D	F

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  Remember: Mathematics is NOT a spectator sport.
  Read through the relevant section of the text (and look over all the assigned problems) before each lecture.

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  OLD QUIZZES m225 Spring 08

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  Homework assignments

  • Homework 1, due Thursday, February 5, 2015
    1. Section 2.2, page 43: 7, 10, 16, 25, 27(a)
    2. Section 2.3, page 51: 8, 14, 18, 22, 28(c), 29
  • Homework 2, due Thursday, February 19, 2015 [solutions]
    1. Section 2.4, page 61: 10, 15, 21, 25, 27(b), 33(a)
  • Homework 3, due Thursday, February 19, 2015 [solutions]
    1. Section 2.4, page 61: 31
    2. Section 2.6, page 74: 11, 22, 33, 41
  • Homework 4, due Thursday, February 26, 2015 [solutions]
    1. Section 2.6, page 74: 32, 40, 42
    2. Section 4.2, page 165: 7, 10, 15, 28, 43
  • Homework 5, due Thursday, March 5, 2015 [solutions]
    1. Section 4.2, page 165: 8, 18, 27
    2. Section 4.3, page 173: 3, 8, 20, 24, 31(a)
  • No Homework due March 12, 2015-STAY SAFE AND WARM!
  • Homework 6, due Thursday, March 26, 2015
    1. Section 4.4, page 182: 9, 11, 20, 23, 26
    2. Section 4.5, page 187: 1, 3, 5, 8, 19, 41
    3. Section 4.6, page 193: 1, 7, 12, 17
  • Homework 7, due Thursday, April 2, 2015
    1. Section 7.2, page 360: 2, 3, 12, 13, 17, 30
  • Homework 8, due Tuesday, April 14, 2015
    1. Section 7.3, page 365: 4, 9, 21, 22, 27, 31
    2. Section 7.4, page 374: 4, 10, 22, 27, 31, 33
  • Homework 9, due Thursday, April 23, 2015
    1. Section 7.5, page 382: 3, 8, 15, 21, 23, 29, 34
    2. Section 7.6, page 393: 5, 21, 26, 30, 35, 39
  • No Homework due Thursday, April 30, 2015

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  Section to be discussed next week: 7.7

  The Official UMBC Honors Code

  By enrolling in this course, each student assumes the responsibilities of an active participant in UMBC's scholarly community in which everyone's academic work and behavior are held to the highest standards of honesty. Cheating, fabrication, plagiarism, and helping others to commit these acts are all forms of academic dishonesty, and they are wrong. Academic misconduct could result in disciplinary action that may include, but is not limited to, suspension or dismissal.

  To read the full Student Academic Conduct Policy, consult the UMBC Student Handbook, the Faculty Handbook, the UMBC Integrity webpage www.umbc.edu/integrity, or the Graduate School website http://www.umbc.edu/gradschool/procedures/integrity.html.

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