Linear Algebra, Spring 2011
Instructor: Andrew Obus
email: obus [at] math.columbia.edu
office: Mathematics 609
phone: 2128546240
website: http://www.math.columbia.edu/~obus/mathV2010s11.html

Linear Algebra with Applications, 4th ed., by Otto Bretscher. This is available at the Columbia Bookstore, on amazon.com, and in the Mathematics Library.
Expected Background:
Officially, the prerequisite is Calculus III. In reality, we will
rarely use calculus. On the other hand, it is important that you
are comfortable with vectors and basic geometry of 3dimensional space
as taught in Calculus III (vector addition, dot product, cross product,
magnitude, normal vectors, etc.).
If you have any questions concerning your background, please speak to me as soon as possible.
Mondays 4:005:00, Wednesdays 10:3011:30. Mathematics 609 (my office). If these times do not work for you, we can try to set up an appointment.
Homework will be due on Wednesdays. It is due IN CLASS. If you are going to miss class for whatever reason, you must either submit the homework to my box outside of Mathematics 410 BEFORE the beginning of class, or have a friend submit your homework in class. Late or improperly submitted homework will never be accepted. If you know in advance you will be unable to turn in homework when it is due, you should plan to turn it in ahead of time. If you have a conflict with a religious holiday, you must let me know BEFORE the fact. I will not be sympathetic if you do not tell me in advance. I will drop your lowest homework score to allow for missed assignments or for assignments that pose special difficulty.
Homework must be neat, wellorganized, and legible. In addition, it must be STAPLED or PAPER CLIPPED
(no folding over the topleft corner or anything like that). Please write in paragraphs, sentences, and English
words (oh my!) when they are called for. The TA should not have to decipher what you are doingyou should be clear and
unambiguous about your methods on a homework problem.
Homework will be graded and every effort will be made to hand it back promptly. Grades will be posted on Courseworks.
Schedule of Homework (will also be posted on Courseworks)
Midterms will be in class on Wednesday February 16th, and Wednesday March 30th. If you have a conflict with one of these days, you must let me know now. Another exam on the same day is not considered a conflict.
The final exam is (tentatively) on Monday, May 9th, from 7:10PM10:00PM.
Calculators are not permitted on exams.
20% Homework
20% Each Midterm
40% Final Exam
It is possible for exceptional class participation to be factored into the homework grade.
I will tolerate no cheating, plagiarism, or other forms of academic dishonesty. Cheating on an exam will result in an automatic grade of zero for that exam. For more serious matters, the Office of Academic Affairs may be contacted.
Calculus Placement/Information Page
Columbia Undergraduate Math Page
If you have (anonymous) comments for me about teaching style or anything related to the course, click here for a feedback form.