**Academic Conduct:** Your conduct in this course, as with all
BU courses, is governed by the BU Academic Conduct Code.
Copies of the code are available from the CAS Dean's office
(CAS 105) or
here..
Specifics rules for specific assignments will be discussed in lecture.

The "Golden Rule" of academic conduct is to "Give Credit Where Credit is Due". That is, if you use or consult a source, including a book, journal, web page or person, then cite that source (i.e., give sufficient information so that someone reading your work could determined what information you used and be able to find the source). The details of the form necessary in citation vary greatly from subject to subject, but the basic rule is universal.

**If you have any doubt about any aspect of proper citation or
academic conduct in general, ask!.**

Who should take this class? (Prerequisites): I will assume that you have had, and remember, a full year of Calculus (i.e., Calculus 1 and 2). You will be expected to remember how to do derivatives and integrals and remember the basic ideas behind these operations. (While all other topics will be introduced "from scratch" those who have had Multivariable Calculus will have a definite advantage from chapter 2 on since you have had more practice with Calculus and you have seen vector fields.)

**Text:** Differential Equations by Blanchard, et.al.--Fourth
Edition

We will cover almost all of the first 4 chapters, some of chapters 5 and 6. You will need software to solve differential equations numerically. There are many places this is available for free--or you can write your own (which is an excellent exercise--even using Excel).

**Technology:** Information for the course will be
presented through the course home page and announcements will be sent
out to the official e-mailing list kept by the registrar. You
are responsible for making sure that email sent to the
email address kept by the registrar reaches you and that
you regularly check this email account.

Blackboard MAY be used, but only to post grades. Make sure you pick up and save all returned homeworks, quizzes, tests and labs and hang on to them until the end of the semester. This is the only way to verify that your recorded grades are correct.

**Special Note:** If you take notes on your laptop or other internet
enabled divice then you are required to email me a copy of your notes
within 15 minutes of the end of class.

**Grades:** During the semester you will accumulate points by
doing homework, in class exams and the final. At the end of the
semester the points will be added with the weighting given below and
your grade will be determined based on the total points accumulated.
Correspondence between letter grades and point values will be announced
for the inclass exams.

Weights for components of the course work are as follows:

- Home work 20%
- First inclass exam: 20%
- Second inclass exam: 25%
- Final: 35%

Notes:

- Almost all students will do almost all of the homework and take it seriously. The quickest way to lower your grade is to not do the homework and/or hand in sloppy work.
- You will have one problem due at most lectures, particularly at the begining of the semester. The solution of this problem should be written on ONE side of ONE sheet of paper, with your name written in the upper left corner. These problems will be graded 0,1 or 2 with 0 for nothing or nothing worthwhile handed in (i.e., your work is sloppy, does not follow the instructions for homework submission or clearly was not taken seriously). The goal of this daily problem is to work on "mathematical writing", so the grading will emphasize both content AND neatness AND clarity of exposition (which does not mean writing a lot, but does mean writing clearly and concisely in sentences).
- You will also have weekly homework assignments to be handed in as announced.
- NO late homework will be accepted for ANY reason. Your 3 lowest daily homeworks and 2 lowest weekly homework scores will be dropped. This policy is in place in order deal with situations when you are ill or otherwise unable to complete your homework. Do not use your "dropped" assignments for other reasons.
- You may send your homework with a classmate if you are ill or can not attend class for some other reason. Electronically submitted homework will NOT be accepted.
- Midterms will be announced 2 weeks in advance.
- The Final will be at the official time scheduled by the registrar Saturday Dec 16, 9-11. No early finals will be given so make your travel plans accordingly. If this time is unacceptable for religious reasons, please contact me--a time will be chosen on the following Monday or Tuesday for the exam.
- If you miss a class for any reason, be sure to get the notes from a classmate. Discuss what went on with the classmate. This will help both of you. I will not send out individual emails with homework assignments or information from missed classes. Kindness can not be legislated but cooperation can.

**Special Note:** If you take notes on your laptop or other internet
enabled divise then you are required to email me a copy of your notes
within 15 minutes of the end of class.

**Miscellaneous:**

**Study groups:**
I encourage you to form study groups and to spend some (not all)
of your study time with your group. Make **absolutely** sure that you
abide by the requirements of the Academic Conduct Code and the rules
for each assignment. In particular, you should write up your assignment
on your own. Papers which are too similar will be subject to action
under the Academic Conduct Code porcedures. Also, if you get a significant
idea or assistance from a tutor or a classmate, BE SURE to reference them
("Thank you to So A. So for suggesting I integrate by parts on problem
3.").

**Pedagogy:** I have heard it said that students learn approximately
5% of the material for a class in lecture. This is usually quoted to
justify doing away with lectures. However, about 5% of my body is my
head and I would not want to do without that.

In fact, I think that the 5% figure is about right. You learn mathematics by doing mathematics, doing exercises and writing up solutions carefully so that your answers can be easily understood. Being able to do problems is the goal. However, seeing examples and hearing the important points discussed before trying to do the problems yourself is much more efficient than reconstructing all the mathematics for yourself. So think of the lectures as how you prepare to do the real work of learning the material--doing the exercises yourself.

**Final comment:** Too many students consider their courses
hoops that they must jump through in order to reach a degree. This
philosophy implies that you only need to keep the material in your
head until the final. This is just wrong.

There are two goals for this course. The first is to learn the techniques involved in applying the Calculus (that you already know!) to the study of differential equations.

The second, and more important, goal is to provide you with a new and quantitative and qualitative ways of investigating the physical world. To be successful, you must train yourself to "see" differential equations in the world around you and to use that vision to give a new way of understanding and predicting behavior.