# Department of Mathematics and Statistics

## MAT 310-02 (Elementary Linear Algebra) Fall 2016

Linear systems, matrices, determinants, eigenvalues and eigenvectors, finite-dimensional vector spaces, linear transformations.

• Pr. grade of at least C in MAT 292

The class meets TTh 9:30 - 10:45 am in Petty 217. The final exam is Thursday, December 8, 2016, 8:00 - 11:00 am.

All announcements and handouts will be posted on Canvas. Be sure to check your UNCG email regularly.

### Homework

The exercise list below will be updated as the semester progresses. Of these, only submit the ones in square brackets to be graded.

Make sure the assignments you turn in are in compliance with the Homework Guidelines for Mathematics.

• 1.1 (1-4, 7-14, 17-26) [3, 4, 8, 10, 12, 14, 18, 23, 24, 25, 26]
• 1.2 (1-4, 7-16, 19-27, 30, 31) [2, 8, 10, 12, 21, 22, 23, 24, 26, 30, 31] Note: The instructions on problems 1-2 are unclear, since some matrices in echelon form are in reduced echelon form, and some matrices in echelon form are not in reduced echelon form, and some are not in echelon form. You should distinguish between these three types as reduced echelon form, echelon form, and not echelon form, respectively.
• 1.3 (3-14, 21-28, 33, 34) [4, 6, 10, 12, 14, 22, 23, 24, 28, 33]
• 1.4 (1-20, 23-26, 28-30, 32) [2, 4, 8, 10, 12, 14, 23, 24, 25, 32]
• 1.5 (1-16, 19, 20, 23-26, 28-37) [2, 6, 10, 12, 14, 16, 20, 23, 24, 25]
• 1.7 (1-30, 33-40) [2, 6, 8, 14, 21, 22, 27, 28, 38, 39]
• 1.8 (1-12, 13-18, 20-25, 31, 32, 35) [4, 6, 10, 16, 17, 21, 22, 31, 35]
• 1.9 (1-6, 15- 20, 23-28, 31-36) [4, 6, 16, 18, 20, 23, 24, 26, 27, 33, 34]
• 1.10 (1, 2, 9, 10, 12) [2, 9, 10]
• 2.1 (1, 2, 5-8, 10, 12, 13, 15, 16, 18-22, 28, 29, 32, 34) [2, 6, 8, 10, 15, 16, 18, 20, 29, 34]
• 2.2 (3, 4, 6-12, 14, 16, 18, 22, 24, 31, 32, 35) [3, 6, 7, 8, 9, 10, 14, 22, 24, 32]
• 2.3 (1-8, 10-14, 18-25, 34, 36) [4, 6, 8, 11, 12, 13, 20, 23, 34, 36]
• 2.8 (1-6, 8, 15-24, 26) [4, 6, 8, 16, 18, 20, 21, 22, 23, 24, 26]
• 2.9 (1-6, 8, 9-18, 22, 24, 25, 27) [4, 6, 10, 12, 14, 17, 18, 22, 27]
• 3.1 (1-12, 15-22, 24-26, 34, 35, 39-41) [2, 6, 10, 12, 20, 22, 24, 34, 35, 41]
• 3.2 (1, 2, 4, 5, 6, 8, 10, 15-18, 21, 22, 24, 25, 27, 28, 31, 34, 35, 40) [1, 2, 5, 6, 22, 24, 27, 28, 31, 34, 40]
• 3.3 (7, 19, 20, 22, 26-32) [20, 26, 27, 28, 29, 32]
• 4.1 (1-20, 23, 24, 32, 33) [1, 2, 5, 11, 14, 18, 20, 23, 24, 32, 33]
• 4.2 (1-37) [2, 6, 12, 16, 25, 26, 27, 28, 31, 35]
• 4.3 (1-16, 21-31) [2, 4, 8, 12, 14, 21, 22, 24, 26, 31]
• 4.4 (1-32) [2, 6, 12, 15, 16, 17, 20, 24, 28, 32]
• 4.5 (1-32) [4, 8, 10, 19, 20, 22, 29, 30, 31]
• 4.6 (1-30) [1, 2, 6, 13, 17, 18, 20, 27, 28, 30]
• 4.7 (1-14) [1, 2, 6, 7, 8, 11, 12, 13, 14]
• 5.1 (1-36) [2, 4, 6, 12, 16, 18, 21, 22 omit c, 24, 25]
• 5.2 (1-27) [4, 6, 9, 10, 16, 18, 21, 22, 23, 24]
• 5.3 (1-32) [2, 4, 8, 12, 21, 22, 24, 25, 27, 31]
• 5.4 (1-31) [2, 3, 5, 8, 12, 16, 17, 19, 20, 25]
• 5.5 (1-26) [4, 12, 15, 18, 22, 23, 25]
• 5.6 (1-18) [1, 2, 6, 10, 12, 18a]
• 6.1 (1-31) [2, 6, 10, 14, 16, 20, 24, 26, 28]
• 6.2 (1-34) [2, 6, 12, 14, 16, 23, 24, 27, 34]
• 6.3 (1-24) [2, 6, 8, 12, 14, 15, 19, 21, 22, 23]
• 6.5 (1-25) [2, 3, 5, 7, 14, 17, 18a-d, 19, 24, 25]
• 6.6 (1-12) [2, 3, 7a, 9]

### Lecture log

Tuesday, 8/23/2016: I gave out the syllabus and lectured on 1.1 and 1.2. I will define echelon form next time, but you should be able to complete the other exercises in 1.1. and 1.2. The quiz on Thursday will focus on definitions from 1.1. Read 1.1-1.3 for Thursday.

Thursday, 8/25/2016: I finished 1.2 and 1.3. We talked about echelon form, vector equations, and linear combinations. Exercises 1.1, 1.2, 1.3 are due Tuesday. When you work word problems (like 1.3.28), be sure to include units in your answers. On true/false problems, justify your answer by giving a reference for true statements and a counter-example for false ones. Read 1.4-1.5 for Tuesday.

Tuesday, 8/30/2016: I lectured on 1.4 and 1.5. I will finish 1.5 and 1.7 next time, but you should be able to complete the other exercises in 1.4. and 1.5. The quiz on Thursday will focus on material since the last quiz. Read 1.7 for Thursday.

Thursday, 9/01/2016: I did an example from 1.5 and lectured on 1.7. The homework 1.5 and 1.7 exercises are due Tuesday. Read 1.8 and 1.9 for Tuesday. I updated the main page of Canvas to include a folder where I will put solutions to exercises and other handouts.

Tuesday, 9/06/2016: I lectured on 1.8 and 1.9. I will finish the theory for 1.9 next time, but you should be able to complete all of 1.8 and many of the exercises in 1.9. I will only collect 1.8 on Thursday. The quiz on Thursday will focus on material since the last quiz. Read 1.10 for Thursday.

Thursday, 9/08/2016: I finished 1.9 and worked some examples from 1.10. The homework 1.9 and 1.10 exercises are due Tuesday. Read 2.1 and 2.2 for Tuesday. I updated the course page to include some additional resources.

Tuesday, 9/13/2016: I finished 2.1 and started 2.2. The homework 2.1 exercises are due Thursday. Read 2.2 and 2.3 for Thursday. I updated the shared folder with more HW solutions and a sample test. Test 1 is next Tuesday.

Thursday, 9/15/2016: I finished 2.2 and 2.3. The homework 2.2 and 2.3 exercises are due next Thursday, but you should work through them before the test on Tuesday. I updated the shared folder with more HW solutions and another sample test. Read your email for a vocabulary list for Test 1.

Tuesday, 9/20/2016: Test 1.

Thursday, 9/22/2016: I lectured on 2.8 Subspaces. Turn in the 2.8 exercises on Tuesday. Read 2.9 for Tuesday. Test 1 grades will be uploaded by Monday.

Tuesday, 9/27/2016: I lectured on 2.9 Dimension and Rank and started Chpt 3 Determinants. I will collect 2.9 exercises on Thursday. Test scores are in Canvas and solutions are in the shared folder. Please check over your tests to be sure I did not make any mistakes. Continue to utilize the Math Help Center and my office hours to get additional help.

Thursday, 9/29/2016: I lectured on 3.1-3.3 Determinants. Turn in the 3.1, 3.2 exercises on Tuesday. I will finish 3.3 on Tuesday with an example. Read 4.1, 4.2 for Tuesday.

Tuesday, 10/04/2016: We finished 3.3 by computing the area of an ellipse using linear maps and determinants. We finished 4.1 and 4.2. Due to popular demand, I will only collect 3.3 and 4.1 on Thursday. Read 4.3 for Thursday.

Thursday, 10/06/2016: I lectured on 4.3 linear independence and bases. Read 4.4, 4.5 for Tuesday.

Tuesday, 10/11/2016: We finished 4.4 and 4.5 so that now we can answer many questions about vector spaces by computing coordinate vectors. I will collect 4.4 and 4.5 on Thursday. Read 4.6 for Thursday.

Thursday, 10/13/2016: We finished 4.6 today. I will collect 4.6 (and 4.5 if you didn't turn it in today) on Thursday. Read 4.7 for Thursday. There is no class on Tuesday because of Fall break.

Thursday, 10/20/2016: We finished 4.7 today. I will collect 4.7 on Thursday since we have a test on Tuesday. You should work through the problems before the test as you are responsible for 4.7 for the test.

Tuesday, 10/25/2016: Test 2. Turn in 4.7 on Thursday. Read 5.1 and 5.2 for Thursday.

Thursday, 10/27/2016: I covered eigenvalues and eigenvectors 5.1 and 5.2. Turn in 5.1 and 5.2 HW on Tuesday. Office hours are cancelled next week. Cliff Smyth will lecture next Tuesday and Thursday. There is a quiz on Thursday.

Tuesday, 11/01/2016: Cliff Smyth lectured on 5.3 and returned graded tests. Solutions are in the shared folder.

Thursday, 11/03/2016: Cliff Smyth lectured on 5.4 and gave a quiz.

Tuesday, 11/08/2016: We covered 5.5 on complex eigenvalues. Read 5.6 for Thursday.

Thursday, 11/11/2016: We covered 5.6 on discete dynamical systems. Read 6.1 and 6.2 for Tuesday.

Tuesday, 11/15/2016: We covered 6.1 and 6.2 on dot product and orthogonality. Read 6.3 for Tuesday.

Thursday, 11/17/2016: We covered 6.3 on orthogonal projection and reviewed for Test 3. The old test with solutions is in the shared folder. Test 3 is Tuesday.

Tuesday, 11/22/2016: Test 3. No class Thursday due to Thanksgiving.

Tuesday, 11/29/2016: Cover 6.5 and 6.6.

Thursday, 12/01/2016: Finish 6.6 and review.

Friday, 12/08/2016: Final exam at 8 am.