Course: Introductory Linear Algebra

Instructor: James Dibble

Email: jdibble (at rci.rutgers.edu)

Lecture: TTh6 5:00-6:20pm, SEC 217 (Busch)

Office Hours: Always available by appointment; regular office hours are Tuesday 3:00-4:45pm in Hill 535 (Busch)

Text: Elementary Linear Algebra: A Matrix Approach (2nd Edition) by Spence, Insel, and Friedberg

Syllabus: http://www.math.rutgers.edu/~jdibble/250/syllabus.pdf [Updated Jan. 24]

Homework Problems:
From the week of January 17-19:
1.1 #1, 3, 5, 7, 9, 11, 21, 23, 25, 27, 37, 38-41, 43-46, 48-56
4.1 #43, 44, 57-59, 81, 82, 84, 89, 91, 93 (Note: #44 is true according to our definition in class; ignore the answer in the back of the book)
7.1 #33-36, 40, 43, 45, 46, 49-52

From the week of January 24-26:
1.2 #1, 3, 5, 7, 9, 11, 15, 31, 33, 35, 37, 41, 43, 45-47, 49-52, 54, 56-59, 62, 63, 72
1.3 #1, 5, 7, 9, 11, 23, 25, 41, 45, 57, 59, 65, 68-70, 73, 79, 83, 84
1.4 #1, 3, 7, 9, 11, 15

From the week of January 31-February 2:
1.3 #39, 43, 49, 58, 60-64, 66, 67, 71, 72, 74-76
1.4 #5, 13, 17, 21, 27, 29, 53, 54, 60-62, 64-66, 70, 71, 83, 84
1.6 #1, 3, 9, 11, 17, 19, 45-47, 50-59, 64

From February 7:
1.6 #25, 27, 33, 35, 39, 41, 43, 60-62
1.7 #27, 29, 31, 33, 39, 41, 51, 53, 57, 63, 64, 66, 68-71, 75, 77-79

From February 9:
1.7 #15, 19, 72-74, 76, 80-82
2.1 #1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 29, 33-44, 46, 47

If it's not already clear, the expression A^3 ("A cubed") means AAA, and C^2 ("C squared") means CC.

Workshops:
Workshop 1: http://www.math.rutgers.edu/~jdibble/250/workshop1.pdf [Solutions: http://www.math.rutgers.edu/~jdibble/250/workshop1solutions.pdf]
Workshop 2: http://www.math.rutgers.edu/~jdibble/250/workshop2.pdf [Due at the beginning of class on Feb. 16]

Remember: The second problem to be graded will be selected randomly at the beginning of class on the due date, so late workshops will not be accepted! Even those only a few seconds late.

Midterm Exams:
The first midterm exam will be Tuesday, February 21, during the regular lecture period.

Links:
Professor Martin J. Erickson's site at Truman State University: http://www2.truman.edu/~erickson/
About two-thirds of the way down the page is a very good guide called "How to Write Mathematics" (guide1.pdf), which may help you learn how to write the proofs on the workshops and exams. Proofwriting can be hard; it takes time to get the form down.

Professor Larry W. Cusick's site at CSU-Fresno: http://zimmer.csufresno.edu/~larryc/
You may find his page "How to Write Proofs" helpful. The first three sections (Induction, Direct Proof, Proof by Contradiction) are the most relevant to our course.