The required textbook is Differential Equations by J. Brannan and W. Boyce, available at the bookstore and on reserve at the library.

The class is an introduction to ordinary differential equations. The material includes separation of variables, integrating factors, systems of equations, eigenvalues and characteristic equations, inhomogenous equations, the Laplace transform, stability, and numerical methods.

Math 51, or familiarity with the following notions:

Derivative in one dimension;

Definition of the Riemann integral;

Fundamental theorem of calculus;

Elementary integration techniques, such as integration by parts and substitutions;

Elementary vector calculus, including dot product;

3-by-3 determinants.

Lecture Instructor: Laurent Demanet Contact info Section 04: MWF 1:15p - 2:05p Room 380-380W Section 02: MWF 2:15p - 3:05p Room 380-380Y Office hours: MW 3:15p - 4:45p or by appointment Room 380-382J	Discussion TA: David Ayala Section 03: TTh 1:15p - 2:05p Room 380-380W Section 12: TTh 2:15p - 3:05p Room McCullough 126 Office hours: M 4:00p - 5:30p W 2:30p - 4:00p Room 380N	Discussion TA: Kaiyuan Zhang Section 05: TTh 11:00a - 11:50a Room 160-314 Section 06: TTh 10:00a - 10:50a Room McCullough 126 Office hours: W 2:00p - 5:00p Room 380G
Lecture Instructor: Pascal Romon Section 01: MWF 10:00a - 10:50a Room 380-380X Section 07: MWF 11:00a - 11:50a Room 380-380X Office hours: MF 2:00a - 3:00a Th 5:30p - 6:30p Room 380-382E	Discussion TA: Lan-Hsuan Huang Section 08: TTh 11:00a - 11:50a Room Herrint 195 Section 09: TTh 1:15p - 2:05p Room 380-380F Office hours: Tu 4:00p-5:30p Th 9:00a-10:30a Room 381F	Discussion TA: Kamil Szczegot Section 10: TTh 10:00a - 10:50a Room 380-380D Section 11: TTh 2:15p - 3:05p Room 160-314 Office hours: T 11:00-12:00 and 3:15-4:15, and Th 11:00-12:00 room 380M

Each student must select one lecture section and one discussion section.

The first day of class is Wednesday April 1. The drop deadline is April 26. There will be no class on Memorial day (May 25).

There will be weekly homework, two midterm exams and one final exam. Grading: homework 15%, first midterm 20%, second midterm 25%, final 40%.

Rescheduling arrangements must be made at least 5 days in advance if you have a course conflict with either midterm. The final is normally not rescheduled. The first midterm will take place on Tuesday April 21 from 7:00pm to 9:00pm in the following rooms: 320-105 for Demanet's sections (TAs: Ayala and Zhang), and 420-41 for Romon's sections (TAs: Huang and Szczegot). The second midterm will take place on Tuesday May 19 from 7:00pm to 9:00pm in room Hewlett 200. The final exam will take place on Friday, June 5th from 7:00pm to 10:00pm in the Cubberly auditorium (CUBAUD). All the exams are open books and open notes, but calculators, computers, and phones are not allowed.

Homework Assignments are usually posted each Thursday and due to your TA the following Thursday at 5PM (see exact dates on the right when in doubt). No late copies will be accepted. You can only receive credit for work turned in to your section leader, as you designate through Coursework. It is okay to discuss the homework with others, but you need to work by yourself on the final copy you'll turn in.

Homework 1 — Due Apr 9 — Solution set Homework 2 — Due Apr 16 — Solution set Midterm 1 — Apr 21 from 7pm to 9pm Homework 3 — Due Apr 23 — Solution set Homework 4 — Due Apr 30 — Solution set Homework 5 — Due May 7 — Solution set Homework 6 — Due May 14 — Sol. set, sol. prob. 2 Midterm 2 — May 19 from 7pm to 9pm Homework 7 — Due May 21 — Solution set Homework 8 — Due May 28 — Solution set Homework 9 — Not due — Solution set

We kindly ask that you complete an online course evaluation at the end of the term, via Axess. Your opinion is very important to us!

Practice first midterm exams: Spring 2008, Fall 2008.

Practice second midterm exams: Spring 2008, Fall 2007, yet another old second midterm.

Practice final exams: 2004 Fall final, 2005 Spring final, 2006 Fall final, 2007 Fall final, 2007 Fall final solutions, 2008 Spring final.

Confused about the material? Your first resource should be the office hours offered by the teaching assistants and the instructors. Office hours are also a good time to give us feedback on the class. If you prefer to make anonymous comments, please leave a note in the instructor's mailbox.

Please write neat and complete solutions to the problem sets. "Neat" means well structured, not only esthetically, but also logically. "Complete" means that the grader will need to see a sufficient amount of explanations and details to give you full credit, even if the question only asks for a numerical answer.

The Center for teaching and learning offers free walk-in tutoring and one-on-one appointments for students in the 50's sequence. Follow this link for times and locations. "The tutors do offer a different sort of help than TAs might. Our tutors are undergraduates who have been trained to ask questions that lead students to come upon solutions on their own. The tutors have succeeded in the class in the past."

The Stanford University Mathematics Organization (SUMO) offers free walk-in tutoring for students in the 50's sequence. Tutoring is available on Mondays 7:15 - 10:15 and Wednesdays 6:15 - 10:15 p.m. in room 380-381T of the math building.