Weekly Reading & Events	WebWorK Assignments	Written Homework	Recommended (not to hand in)	Supplements & Solutions
Week of 8/25: Lectures 1-3 Be sure to read How to Study Linear Algebra at this link OR in your Study Guide. Read Note to Students (preceding Chapter 1) in text Read the Introductory Example (about Leontief) at the start of Chapter 1. Read Sec. 1.1--1.3, and 1.6;	WebWorK WW 1 opens at 12:01 a.m. on Wednesday, 8/27 and answers due online by 11:59 p.m. on Tuesday, 9/2. See WebWork for more details Contact me right away if your name does not appear in WebWorK; include your name, WU ID number, and email address and I will add you into WebWorK's list.	You should get started on the handin HW 1 problems soon. They are list below, in the week of Sept. 1, because they aren't due until Friday, September 5. See Homework for guidelines about written solutions	At the end of each section, try the Practice Problems before starting the homework: for example, on p. 9 for Sec. 1.1 Almost every section in the text contains some "true/false" questions. T/F questions are an excellent way to check your understanding.For example, 23-24 in Sec. 1.1 Sec 1.1: 5, 7, 11, 19, 23, 24, 25, 31 Sec 1.2: 7, 13, 15, 19, 21, 22, 25, 31	PDFs for Lecture 1 PDFs for Lecture 2 PDFs for Lecture 3 Online tools that you might like to use to help with row reducing matrices.  None are necessary. Some of them are also useful for more advanced topics later. But be sure you can do row reductions by hand for small matrices--e.g., for exams. Row Reducer Row Echelon Form Simple Matrix Calculator Wolfram Alpha For those who use Matlab
	WebWorK	Written Homework Hand In	Recommended (not to hand in)
Week of 9/1:  Lectures 4-5   Monday, September 1: Labor Day: no class Read Sec. 1.4-1.5	WebWork Assignment WW1 due online by 11:59 p.m. Tuesday, 9/2. WW2 opens 12:01 a.m. Wed. 9/3	HW1 due in class Friday, Sept. 5 Always include enough detail in every homework solution so the reader can understand how you got your answer. Sec. 1.1: 16, 22, 26, 33, 34 Sec. 1.2: 4,12,16, 26, 28, 30 (refer back to 29 for teminology) Sec. 1.3: 10, 11, 14, 20, 22 Sec 1.6:  6,12 Solutions for HW1	Sec 1.3: 7, 23, 24, 25,32 Sec 1.4.: 13, 17, 23, 24 Sec 1.5: 23, 24, 29, 31, 36	PDFs for Lecture 4 PDFs for Lecture 5 An additional "economic" example like Ex 1, Section 1.6
	WebWorK	Hand In	Recommended (not to hand in)
Week of 9/8 Lectures 6-8 Read anything you skipped in Sec 1.6 Read Sec 1.7-1.8	WebWork Assignment WW2 due online by 11:59 p.m. Tuesday, 9/9. WW3 opens 12:01 a.m. Wed. 9/10	HW 2 due in class Friday, Sept.12 Sec. 1,4: 8,10,18, 22, 30, 36 Sec. 1.5: 10,16, 20, 30, 34, 40 Sec. 1.7: 8 More problems for thie HW may be added up until 5 p.m. on Tuesday, 9/9 Solutions for HW2	Sec. 1.7:  1,5,12, 21, 22, 29, 30, 33-35, 37	An additional "economics" example similar to Ex 1, Section 1.6 PDFs for Lecture 6 PDFs for Lecture 7 PDFs for Lecture 8
	WebWorK	Hand In	Recommended (not to hand in)
Week of 9/15 Lectures 9-11 Read Sec 1.8 - 1.10 (in 1.10 it's ok to skip the example on electirical networks. But those interested in physics and engineering should certainly read it.	WebWork Assignment WW3 due online by 11:59 p.m. Tuesday, 9/16 WW4 opens 12:01 a.m. Wed. 9/17	HW 3 due in class Friday, Sept. 19 Sec. 1.7: 18, 24, 26, 32, 36, 38 (more computational practice with Sec. 1.7 was in WW 3) Sec. 1.8: 14,18,32 Sec 1.9: 4,6,8,14,16 Solutions for HW3	Sec.1.8: 13,15,19,21, 22,33 Sec.1.9: 13,23,34	PDFs for Lecture 9 Lecture 10, Rotation Cartoon--is the matrix correct? Lecture 10: A Linear Difference Equation PDFs for Lecture 10 (onto and 1-1 transformations) PDFs for Lecture 11
	WebWorK	Hand In	Recommended (not to hand in)
Week of 9/22 Lectures 12-14 Read Sections 2.1-2.3	WebWork Assignment WW4 due online by 11:59 p.m. Tuesday, 9/23 WW5 opens 12:01 a.m. Wed. 9/24	HW 4 due in class Friday, Sept. 26 Always include enough detail in every homework solution so the reader can understand how you got your answer. Supplementary Exercises on p. 90: 22 Sec. 2.1: 6, 10, 20, 24, 26,34 Sec 2.2: 2, 8, 14, 16, 18, 23,38  (Answer these questions based on the material covered in 2.1-2.2; don't refer ahead to the Invertible Matrix Theorem in Sec. 2.3 Solutions for HW4	Sec. 2.1: 15, 18 Sec 2.2: 7, 9,10,13	PDFs for Lecture 12 PDFs for Lecture 13 EROs and Multiplication by Elementary Matrices PDFs for Lecture 14 Invertible Matrix Theorem
	WebWorK	Hand In	Recommended (not to hand in)
Week of 9/29 Lectures 15-17 Read Sections  2.4, 2.5 (you can skip, if youl like, the last part about factorizations in electircal engineering--but engineers might enjoy that), 2.6	WW 5 is due Tuesday, 9/30, by 11:59 p.m. There will be no WW6 due next Tuesday because of the exam next Monday (Oct 6)	HW 5 due in class on Friday,  Oct, 3 Sec 2.3: 11, 12, 20, 22, 27, 33 Sec 2,4:  4, 8 10 (in 8, assume matrices A and X are square!), (in 10, find P,Q,R means "in terms of A,B,D") Solutions for HW5	Sec. 2.3: 8,16, 26, 24,39 Sec, 2.4:  5,7	PDFs for Lecture 15 Notes on LU Decomposition (handed out in class, plus a couple of more pages here for those who are interested) PDFs for Lecture 16 Notes on Leontief Open Economy Production Model First two pages of Leontief's Scientific American Article on "Imput-Output" Analysis PDFs for Lecture 17
	WebWorK	Hand In	Recommended (not to hand in)
Week of 10/6 Lectures 18-20 EXAM 1 MONDAY EVENING, 10/6 7-9 p.m. ROOM = LAB SCIENCES 300 Probably 2,12 from Sec. 2.5, HW6 are worth doing just to prepare the very basics of LU decomposition Some terms to know for Exam 1 Old Exam for practice Solutions for Old Exam Solutions for Exam 1 Read Sections 3.1-3.3 (in 3.3, it's sufficient to read the part "Determinants as Area or Volume", pp. 180-184)	WW6 will open Wednesday, 10/8 at 12:01 a.m. and be due the following Tuesday, 10/14, by 11:59 p.m.	HW 6 due in class on Friday,  Oct, 10 (a bit shorter than usual) Sec. 2.5: 2,12, 24, 26 Sec. 3.1:  12, 18 Sec. 3.2:  10, 26 Solutions for HW6	Sec. 2.5: 3,7, 17, 21 (the comments about in #17 abow how MATLAB works are irrelevant to solving the problem) Sec. 3.1: 39, 40	PDFs for Lecture 18 PDFs for Lecture 19 PDFs for Lecture 20
x	WebWorK	Hand In	Recommended (not to hand in)
Week of 10/13 Lectures 21-22 Read Sections 4.1-4.2 FRIDAY, OCT 17 Fall Break No Class!	WW6 due  Tuesday, 10/14, by 11:59 p.m. A Linearity Property of Determinants	HW 7 due in class Friday, October 24 (because of fall break!) The problems in HW 7 will cover material for most of two weeks, so HW 7, in total, is longer.  Don't put it all of until near the due date!   Sec. 3.2: 34, 35, 36 Sec. 3.3:  22, 23, 27, 32 Sec 4.1: 8, 12, 17, 28 Sec. 4.2: 6, 10, 14, 22, 24, 27, 28, 32, 34	Recommended (not to hand in) Sec 3.2: 27, 28 Sec. 3.3: 30 (note: the formula should include the absolute value bars around the determinant.) Sec. 4.1: 23, 24, 32 Sec. 4.2:  18, 20	PDFs for Lecture 21 PDFs for Lecture 22
	WebWorK	Hand In	Recommended (not to hand in)
Week of 10/20 Lectures 23-25 This might be a good time to remind you of the resources for study from the author (see reviews sheets and practice exams link) as well as the general advice at How to Study Linear Algebra Read Sections 4.3 - 4.4	WW7 will open (one day early) at 12:01 a.m. on Tuesday, 10/21.  Answers are due online by 11:59 p.m. on Tuesday, 10/28.	NOTE: some of the problems below were already posted last week, but not yet collected. There may be additional problems too until 5pm Tuesday. HW 7 due in class Friday, October 24 The problems in HW 7 will cover material for most of two weeks, so HW 7, in total, is longer.  Don't put it all of until near the due date! Sec. 3.2: 34, 35. 36 Sec. 3.3:  22, 23, 27, 32 Sec 4.1: 8, 12, 17, 28 Sec. 4.2: 6, 10, 14, 22, 24, 27, 28, 32, 34 Sec 4.3: 20, 32 Solutions for HW7	Sec. 4.3: 3, 7, 19, 21, 22, 31	PDFs for Lecture 23 PDFs for Lecture 24 PDFs for Lecture 25 Notes: Rotating Coordinate Axes
	WebWorK	Hand In	Recommended (not to hand in)
Week of 10/27 Lectures 26-28 Read notes on Introduction to Diagonalization (distributed Monday in class) Read Sections 4.5-4.6	WW 7 answers due online by 11:59 p.m. on Tuesday, 10/28.	HW 8 due in class, Friday, October 31. Section 4.3: 30, 34 Sec. 4.4: 4, 6, 8,12, 22, 28, 32 In addition to the textbook problems below, do the problems about rotation of axes on this sheet.         AND the problems about diagonalization on this sheet. Solutions for HW8	Sec. 4.4: 15,16,17,19	Introduction to Diagonalization PDFs for Lecture 26 PDFs for Lecture 27 Extra Example on Diagonalization PDFs for Lecture 28
	WebWorK	Hand In	Recommended (not to hand in)
Week of  11/3 Lectures 29-31 Read Sec. 5.1-5.3 EXAM 2 WEDNESDAY 7 P.M. Some terms to know for Exam 2 Old Exam for practice Solutions for Old Exam Exam 2 Solutions	No WW due this week because of Exam 2 WW8 opened Thursday, 11/6 at 4:55 pm. Answers due online by Tuesday, 11/11 at 11:59 p.m.	No HW collected this week.   HW 9 will be due in class on Friday, 11/14. Sec. 4.5: 6,14 Sec. 4.6: 20, 24, 26 Sec: 5.1: 16, 24, 27, 32, 35 Sec 5.2: 10, 16, 18 .	Sec. 4.5: 9, 19, 20 , 29, 30 Sec. 4.6: 3, 9, 17, 18 Sec 5.1:  21, 22, 25 Sec 5.2: 21, 22 Sec. 5.3:  21, 22	NO PDFs for Lecture 29 PDFs for Lecture 30 Another Diagonalization Example PDFs for Lecture 31 Supplementary Proofs about Diagonalization
	WebWorK	Hand In	Recommended (not to hand in)
Week of 11/10 Lectures 32-34 Red Sec 5.4; you can skip 5.5 unless you want to read it; In Sec. 5.6. You can skip the material on "Change of Variables" and "Complex Eigenvalues" on pp. 306-307 but resume reading at bottom of p. 307 (Spotted Owls) to the end of Sec. 5.6,	WW8 answers due online by Tuesday, 11/11 at 11:59 p.m WW9 opens at 12:01 a.m. on Wednesday 11/12	HW 9 will be due in class on Friday, 11/14. Sec. 4.5: 6,14 Sec. 4.6: 20, 24, 26 Sec: 5.1: 16, 24, 27, 32, 35 Sec 5.2: 10, 16, 18 Sec 5.3:  6, 16, 18, 24, 26 Solutions for HW9	Sec. 4.5: 9, 19, 20 , 29, 30 Sec. 4.6: 3, 9, 17, 18 Sec 5.1:  21, 22, 25 Sec 5.2: 21, 22 Sec. 5.3: 21, 22	PDFs for Lecture 32 PDFs for Lecture 33 More Spotted Owl Information Owls and Rats PDFs for Lecture 34
	WebWorK	Hand In	Recommended (not to hand in)
Week of 11/17 Lectures 35-37 Read Secs. 6.1-6.3, start 6.4	WW9 answers due online by Tuesday, 11/18, at 11:59 p.m. WW10 opens at 12:01 a.m. on Wednesday, 11/19. Because of Thanksgiving Break next week, WW10 answers won't be due until THURSDAY, 12/4 at 11:59 p.m. This is just before the last day of class. WW10 is a little longer and contains some material that might not be covered before Thanksgiving Break.  I might add a few more problems to WW10 after it opens, but I will notify the class by email if I do that.	HW 10 will be due in class on Friday, 11/21. Sec 5.4: 4, 8, 10, 16, 18, 20 Sec. 6.1: 24, 26, 31 Sec 6.2: 8,10,14,16, 28 Solutions for HW10	Sec 5.4: 13, 23 Sec. 6.1: 19, 20 Sec 6.2: 23, 24, 27	PDFs for Lecture 35 PDFs for Lecture 36 About 2 x 2 Orthogonal Matrices PDFs for Lecture 37 Notes on the Gram-Schmidt Process
	WebWorK	Hand In	Recommended (not to hand in)
Week of 11/24 Lectures 38 Finish Reading Section 6.4 Read Sec. 6.5, up to Theorem 14, You can skip the short subsection at the end of 6.4 about the QR Factorization if you like.  There are some optional notes posted in the right column here. Thanksgiving Break 11/26-30 No Class Wednesday, Friday	WW 10 opened on Wednesday, 11/19. Answers will not be due until 11:59 p.m. on THURSDAY, 12/4.	HW 11 problems are listed below in the row for nwext week.  They are due on Friday, December 5 (last day of class)		The QR Factorization (optional notes) PDFs for Lecture 38
	WebWorK	Hand In	Recommended (not to hand in)
Week of  12/1 Lectures 39-41 We covered Sec. 6.5, up to Theorem 14 last Monday.  We will quickly review that but be prepared to move on quickly from there. Read the material in 6.6 on application of least squares to linear models	WW 10 (the last) opened early on Wednesday, 11/19.  Answers are due online by 11:59 p.m. on THURSDAY, 12/4.	HW 11:  Due in class on Friday, 12/5 (last day of class) Sec 6.3:  6,14 Sec. 6.4:  6,12, 20 Sec, 6.5:  4,12,14, 24, 25 Sec. 6.6:  4, 7, 8, 10  (in each of 7,8,10, do part a) only) Solutions for HW11	Sec. 6.3:  19 Sec. 6.4: 17 Sec. 6.5: 17 Sec. 6.6: 3,5	PDFs for Lecture 39 PDFs for Lecture 40 PDFs for Lecture 41 Notes on Inner Product Spaces Extra Reading (posted after the course ended): orthogonal diagonalization and the spectral theorem