MTH 261
Welcome to the homepage for MTH 261!
This page will be used to access files and for general information purposes.
Homework
All homework will be found in the textbook, David Lay, Steven Lay, and Judi McDonald’s Linear Algebra and Its Applications. Select prompts for each section of homework are listed below. Both the 5th and 6th Editions are acceptable.
The homework prompts listed are a starting point to practice the material we learned in class (or from the videos). Some people may feel they need more practice after working through these prompts, and that is great to have that self-awareness! In this case, try some of the even prompts between the assigned odd ones.
5th Edition
§1.1 (p. 10): # 1 – 17 odd, 23, 26
§1.2 (p. 21): # 1, 3, 5, 6, 7, 11, 13, 17 – 25 odd, 29
§1.3 (p. 32): # 1, 3, 5, 6, 7 – 23 odd, 27, 33
§1.4 (p. 40): # 1 – 25 odd, 33
§1.5 (p. 48): # 1 – 27 odd, 35
§1.7 (p. 61): # 1 – 29 odd
§1.8 (p. 69): # 1 – 23 odd, 27, 29, 31
§1.9 (p. 79): # 1 – 27 odd, 31
§2.1 (p. 102): # 3, 5a, 6a, 7, 15, 23, 27, 28, 31, 32
§2.2 (p. 111): # 3, 7, 9, 13, 17, 18, 23, 25, 31
§2.3 (p. 117): # 1, 3, 7, 11, 13, 15, 17, 19, 23, 33
§2.8 (p. 153): # 1, 5 – 13 odd, 17 – 25 odd
§2.9 (p. 159): # 1 – 21 odd
§3.1 (p. 169): # 5, 7, 9, 11, 15, 19, 20, 21, 33
§3.2 (p. 177): # 1, 5, 9, 13, 15, 21, 23, 25, 27
§4.1 (p. 197): # 1 – 4 all, 5 – 23 odd, 25 – 29 all, 31, 33
§4.2 (p. 207): # 1 – 33 odd, (bonus: 34)
§4.3 (p. 215): # 1 – 27 odd, 29, 30, 31
§4.4 (p. 224): # 1 – 23 odd, 24, 27, 31
§4.5 (p. 231): # 1 – 31 odd
§4.6 (p. 238): # 1 – 31 odd
§5.1 (p. 273): # 5, 9, 13, 15, 17, 21, 25, 31
§5.2 (p. 281): # 5 – 17 odd, 21, 23, 25
§5.3 (p. 288): # 1, 5, 7, 11, 15, 17, 21
§6.1 (p. 338): # 3, 5, 11, 13, 17, 19
§6.2 (p. 346): # 3, 5, 9, 11, 13, 17, 23
§6.3 (p. 354): # 1 – 21 odd
§6.4 (p. 360): # 3, 7, 9, 13, 17
6th Edition 
§1.1 (p. 10): # 5 – 15 odd, 19, 23 – 35 odd
§1.2 (p. 23): # 1, 3, 5, 6, 9 – 33 odd, 45
§1.3 (p. 34): # 1, 3, 5, 6, 7 – 31 odd, 41
§1.4 (p. 42): # 1 – 31 odd
§1.5 (p. 51): # 1 – 23 odd, 27 – 35 odd
§1.7 (p. 65): # 1 – 27 odd, 35
§1.8 (p. 73): # 1 – 15 odd, 19 – 29 odd, 41, 43
§1.9 (p. 82): # 1 – 9 odd, 15 – 31 odd, 39, 40
§2.1 (p. 108): # 3, 5a, 7, 11, 15 – 23 odd, 35
§2.2 (p. 118): # 1, 3, 5, 9 – 23 odd, 27, 31, 33, 39, 41
§2.3 (p. 124): # 1, 3, 5, 9 – 19 odd, 31
§2.8 (p. 160): # 1, 5 – 13 odd, 15, 19 – 33 odd
§2.9 (p. 166): # 1 – 13 odd, 17 – 27 odd
§3.1 (p. 177): # 5, 7, 9, 11, 21, 35 – 43 odd
§3.2 (p. 185): # 5, 9, 13, 17, 21 – 33 odd
§4.1 (p. 208): # 3 – 9 odd, 21 – 33 odd
§4.2 (p. 219): # 1, 2, 3, 9 – 37 odd
§4.3 (p. 228): # 3 – 31 odd
§4.4 (p. 238): # 1 – 21 odd
§4.5 (p. 247): # 1 – 29 odd, 33, 34, 37
§5.1 (p. 280): # 5, 7, 9, 13, 17, 21 – 29 odd
§5.2 (p. 288): # 5, 7, 9, 11, 17, 21 – 29 odd
§5.3 (p. 295): # 1, 5, 7, 11, 15, 21- 27 odd
§6.1 (p. 356): # 3, 5, 9, 11, 13, 17 – 27 odd
§6.2 (p. 364): # 3, 5, 9, 11, 13, 17, 21 – 29 odd
§6.3 (p. 374): # 1 – 15 odd, 21 – 29 odd
§6.4 (p. 380): # 3, 7, 9, 13, 17
Note Sheets
Below are Guided Note Sheets. These are blank and constitute what will be covered during lecture.
LaTeX
Please access the LaTeX for MTH 261 page for documentation on writing in LaTeX.
Portfolio
By the end of the term, you will complete this portfolio. Each prompt will be collected at some point during the term and returned with feedback provided. By the end of the term, you will turn in the entire portfolio for a grade.
Reviews
Below are some reviews for both the midterm exam and the final exam. Use these reviews to study for the exam. These will not be collected or covered in class.
Extra Credits
There are two extra credit opportunities available to you. Please complete these any time before the last week of instruction.
- Extra Credit 1: Women in Math: The Limit Does Not Exist
- Extra Credit 2: The Mathematics of the Three Waves of AI
Videos
I strongly recommend checking out 3blue1brown’s?The Essence of Linear Algebra. This series follows a different trajectory through the topics of the course, but he does a wonderful job explaining some of the abstract concepts we cover.