**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.

**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 need to learn the proper way to write-up your homework problem solutions. Special assignments will be made to provide feedback on writing. Failure to write neat, clear, concise and complete solutions will result in deduction of credit (even if you have the "right answer"...the right answer always includes a discussion of how you came up with that answer or why the answer is right).
- You will also have weekly homework assignments to be handed in as announced.
- NO late homework will be accepted for ANY REASON EVER!! DO NOT ASK. Your lowest three homework scores will be dropped no questions asked. This policy is in place in order deal with situations when you are ill or otherwise unable to complete your homework or slightly ill and unable to do your best work. It is always in your interest to do as much of the homework as possible. Do not use your "dropped" assignments for frivolous reasons.
- You may send your homework with a classmate if you are ill or can not attend class for any 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 Weds. May 9, 9-11 AM. No early finals will be given for any reason, so make your travel plans accordingly.
- 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 FOR ANY REASON. In fact, I will not even respond to requests for this information, so it is important that you get contact information with classmates now, before you need that information. You do not need to be friends, but you are, and need to act like, colleagues. 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 percent of the material for a class in lecture. This is usually quoted to
justify doing away with lectures. However, about 5 percent of my body is my
head and I would not want to do without that.

In fact, I think that the 5 percent 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 (the mathematics we will cover took hundreds of years to develope). 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 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.