Instructor: Dr. Isabel K. Darcy
Department of Mathematics and AMCS
University of Iowa
Office: 25J MLH
Phone: 319335 0770
Email: isabeldarcy AT uiowa.edu
Ways to get help:
Integration Prerequisites:
The following free supplemental online book contains many nice examples and good explanations: Paul's Online Notes: Differential Equations
TENTATIVE CLASS SCHEDULEALL DATES and CONTENT SUBJECT TO CHANGE:
Tentative Schedule  Announcements  
Week 1  

8/26  1.1, 1.2 = 2.2 , notes  Partial Fractions Review 
8/28  old notes for ch 1 and 2 (pdf)  
8/30  ch 1 (pptx) ,
2.2 FYI: old annotated slides (AM pptx  OLD),
(PM pptx  OLD) ,  
Week 2  
9/2  Holiday 
Due Monday:online WP homework 1 Due Friday Homework 1b (html). 
9/4  slope fields, 2.2 (pptx), 2.1 notes, 2.1 Integrating Factor more examples: AM notes, PM notes, older 2.1 notes  
9/6  more 2.1 notes, more 2.1 notes (Marked), 2.2 + HW2 hints (pptx), 2.3 notes, 2.3 example from p. 9 of old notes for ch 1 and 2 (pdf),  
Week 3  
9/9  2.2 example(pptx) , Quiz 1 
Due Wednesday: online WP homework 2 
9/11  2.4: Existence and Uniqueness slides, annotated slides, 2.5 Stability  
9/13  2.4, 2.5, 2.5 old slides, old FYI: old annotated slides 2.4&2.5AM 2.4&2.5PM  
Week 4  
9/16  3.1: 2nd order linear homog, 2.7: Approx 1st order solns , 
Due Monday: Homework 2b and online WP homework 3 Video: 2.7: Euler's method for approximating a function using tangent lines (27:00 min) 
9/18  2.8 Approximating solutions (slides), FYI: old annotated slides 2.5&2.8PM AM, PM 2.8, 2.7, 3.1),  
9/20  2.8, 3.1  3.4, FYI: old annotated slides AM PM, Quiz 2  
Week 5  
9/23  notes for 3.1, 3, 4, FYI: 3.1  3.2, 3.1  3.4 (old), FYI: old annotated slides AM PM 
Due Monday: online WP homework 4 For HW 5, notice the behavior of the solutions. Some of these solutions will model mechanical/electrical vibration problems (section 3.7)
Hint for problem 15: to use recommended substitution, note 
9/25 
9y'' + 6y' +y = 0, y(0) = 1, y'(0) = 2, Wronskian. FYI: OLD FYI: old annotated slides AM PM FYI: Linearity, 3.1  3.4, 3.5, FYI: old annotated slides AM PM  
9/27  3.2  
Week 6  
9/30  Review 
Due Monday: online WP homework 5
Midterm 1
6:30PM  8:00PM 10/03/2024 Thu

10/2  See recordings  
10/4  3.5 FYI: 3.5, old annotated slides PM,  
Week 7  
10/7  3.5 worksheet, answers, Attendance Quiz 14, 3.7 , FYI: old annotated slides AM, PM 
Practice problems (not HW, but will help) 3.5 worksheet, answers with explanations. 3.5 worksheet 3.5 worksheet answers 
10/9  3.7 Rcos(wtd), 3.8 Rcos(wtd)  
10/11  Attendance Quiz 16, 3.7, 3.8 , FYI: old annotated slides AM, PM 3.7, 3.8 review, 4.1, FYI: old annotated slides AM, PM  
Week 8  
10/14  3.8, 4.1 , FYI: old annotated slides AM, PM 
Due Monday: online WP homework 6 Homework 7b and online WP homework 7 For section 3.6 HW,use matrix form if you use a formula (this will make section 4.4 much easier).
3.7 worksheet (optional  includes more advanced topics NOT covered) 
10/16  4.1, 4.2, FYI: old annotated slides AM, PM  
10/18  4.1, 4.2, 2023 quiz 3, 2023 answers  
Week 9  
10/21  Attendance quiz 20/21, 3.7 damping, 4.3, 3.6, FYI: old annotated slides AM, PM 
Due Monday Oct 23: Homework 8b and online WP homework 8 Solving higher order linear homogeneous DE (See also 4.1/4.2 slides) Intro to Ch 6: LaPlace Transform

10/23  4.4  
10/25  6.1 notes , ONLINE quiz 4  
Week 10  
10/28  6.1  6.3 
Due Monday: online WP homework 9 
10/30  LaPlace table, 6.2  
11/1  6.3, notes, 6.3 answers, 6.3  
Week 11  
11/4  6.3 (see also 11/8) 
Due Monday: online WP homework 10 
11/6  3.8 Resonance, resonance,  
11/8  Review, and online quiz 5  
Week 12  
11/11  Exam 2 problem session 
Due Monday: online WP homework 11 Midterm 2: 6:30PM  8:00PM Thursday November 14 over Chapters 3 and 4 and 6.16.4. 
11/13  6.4 example, 6.3, 6.6, 6.4 , 6.4  
11/15  6.5, 6.6, 2023 notes  
Week 13  
11/18  6.6, 7.1, 7.4, FYI: old annotated slides AM, PM, 2022 notes 
Due Monday: online WP homework 11 part 2 (over 6.4) For 7.5 graphs, you might consider using this pdf for your graphs 
11/20  7.4, 7.5, FYI: old annotated slides AM, PM, 7.5 graphing, 7.5 graphing, 7.6  
11/22  7.5, 7.6, 2023 notes  
Week 14  
12/2  7.5graphing, Class notes 2023, 7.6, Fall 22 slides 
Due Monday: online WP homework 12 (over 6.5, 6.6, 7.1) and Due Wednesday: Paper Homework 13b: 7.5: 1, 2, 4; 7.6: 1, 2 
12/4  Class notes 2023, 2023 slides , OLD notes and sample quiz  
12/6  9.1, 9.2 , 9.1, 9.2 , and online quiz 6  
Week 15  
12/9  9.2 (2023 version) 
Due Monday: online WP homework 13 (over 7.4, 7.5, 7.6) and Paper homework 14b: 9.1: 1abc, 5abc, 9abc
Due Saturday: 
12/11  9.1, 9.2 , 7.7  
12/13  Review, see also Darcy Lecture under ICON/Modules, Review, Review  
Final's week  
TBA  