Instructor: Dr. Isabel K. Darcy
Department of Mathematics and AMCS
University of Iowa
Office:B1H MLH
Phone: 335 0778
Email: isabeldarcy AT uiowa.edu
Office hours:
M 10:40am  11:50am,
W 3:30  4:20pm, F 2:00  2:20pm in MLH B1H (my office),
MF 5:20  5:25pm+ and W 5:20  6:10pm+ in MLH 113 or 110 or B1H*
and by appointment.
Note: + means I will be also available directly after the office hour, normally for as long as needed or at least until 6:30pm.
*Depending on
room availability, I will hold evening office hours in MLH 110/113 or in the basement MLH B1H.
Note: Most Mondays 3:20  4:20pm, you will find me in MLH 214 and most Fridays 3:20  4:20pm, you will find me in MLH 205.
Wiki Site: https://wiki.uiowa.edu/display/3600/Class+List
Note: Old exams from MATH:3600 are available from my previous course websites:
MATH:3600 Introductn Ordinary Differential Equatns (Spring 13)
MATH:3600 Introductn Ordinary Differential Equatns (Spring 16)
Note: Old exams from 22M:034 are available from my previous course websites:
22M:034:091 Engineering Math IV: Differential Equations 9:30A  10:20A MWF 217 MLH(Fall 10)
22M:034:081 Engineering Math IV: Differential Equations 8:30A  9:20A MWF 105 MLH(Fall 08)
22M:034:102 Engineering Math IV: Differential Eqns. 10:30A  11:20A MWF 210 MLH (Spring 05)
22M:034:102 Engineering Math IV: Differential Equations TR 10:55  12:10, 118 MLH (Fall 03)
TENTATIVE CLASS SCHEDULEALL DATES SUBJECT TO CHANGE (click on date/section for pdf file of corresponding class material):
Monday  Wednesday  Friday  HW/Announcements  
Week 1  8/22: 1.1  8/24: ch 1, 2.2 (ppt, pdf), WA, ch 1 and 2,  8/26: ; 1.2, 2.2  Note the HW assignments below are TENTATIVE. Also, the due dates WILL CHANGE. 
Week 2  8/29: ch1, 2.1, 2.2  8/31: 2.1  2.3 int by parts, partial fractions 1:1  9/2: 2.3, 2.4 
HW 1 (due Wednesday 8/31) 1.1: 1,2,11,14  20all, 28; 1.2: 1,7,8,9,14,17; 1.3: 1, 5, 6, 9 
Week 3  9/5: Holiday  9/7: 2.4  9/9:
2.4ex
p. 134, 5,
quiz 1, answers 
HW 2 (due Wednesday 9/7) 11, onto, bijection 2.1: 1c, 2c, 8c, 18, 19 2.2: 1, 2, 13, 14, 25 2.3: 710 
Week 4  9/12: Ex 2.4, 2.5 ex, IVP ex, Ex 2.4.1,  9/14: 2.5, 2.8  9/16: 2.8, linear fns, 
HW 3 (due Wednesday 9/14) 2.3: 16, (2023)a, 25a, 29 2.4: 1, 2, 8, 9, 15, 16, 21  25, 27  31, read 32 p. 134, 135: 36, 42, 47 
Week 5  9/19: 3.1  3.5  9/21: review 3.1  3.4  9/23:
3.3, 3.4
quiz 2 (cumulative), answers 
HW 4 (due Wednesday 9/21) p. 134, 135: 4851 2.5: 8 (also draw the direction field), 12, 15, 20, 22 2.8: 1, 2, [3, 6 a & c  Use induction to prove your formula for phi_n. Also prove convergence] 3.1: 2, 5 A.) By giving a specific counterexample, prove that the following functions are not linear functions: i) f(x) = \sqrt{x}. ii) g(x) = 1/x B.) Prove that the following functions in a linear function: h(x) = 4x 
Week 6  9/26: 3.5  9/28: 2.3 #22, Review  9/30: Exam 1, answers 
HW 5 (due Wednesday 10/5  next week, but on exam)
3.1: 8, 11, 14, 17, 21 3.2: 1, 2, 3, 9, 10, 13, 14, 15, 16, 21, 25 3.3: 1, 9, 12, 15, 18, 21 3.4: 3, 9, 12, 14 
Week 7  10/3: 3.6 or 5.1, 5.2  10/5: 5.2  10/7: 5.3, 5.4 
HW 5 (due Wednesday 10/5) See week above.

Week 8  10/10: 5.3, 5.4  10/12: 5.4,  10/14: quiz 3 quiz 3 answers 
HW 6 (due Wednesday 10/12) 3.5: 1, 5, 11, 15, 21a, 23a, 24a, 26a 3.6: 1, 11, 13 [NOTE addition of 3.6] 5.1: 7, 8, 12, 13, 24, 28 5.2: 2 Note this is LONG HW assignment. You must provide complete answers including induction proofs. a.) Find the recurrence relation for the power series solution about the given point x_0 b.) Find the first four terms in each of two solutions y_0, y_1 (unless series terminates sooner). d.) Find the general term, a_n, and prove it. Determine the general solution y = a_0y_0 + a_1y_1 and determine the radius of convergence c.) Show y_0 and y_1 form a fundamental set of solutions by evaluating the Wronskian at x_0 For more on series solutions see Paul's Online Math Notes (for printing select pdf chapter notes) 
Week 9  10/17:  10/19:  10/21: 5.5 
HW 7 (due Wednesday 10/19) 5.2: 7, 9, 12 (do all of a  d as you did for HW 6), 22 (for 22, you only need to approximate the solution with a cubic polynomial for 22b). 5.3: 8, 9 (but only for 5.2: 2, 7, 9, 12), 20 5.4: 2, 3, 4, 7, 10, 24 
Week 10  10/24: 5.5 part 2  10/26: Review, handout list  10/28:
Exam 2 over 3.5, 3.6, 5.1  5.5, 7.3 answers 
HW 8 (due Wednesday 11/2  next week, but 5.5 and 7.3: 16, 17 on exam) 7.2: 4, 23, 25 7.3: 15, 16, 17  Note this is LONG HW assignment. 5.5: 3, 7 (you must provide complete answers including induction proof and determine radius of convergence.) 
Week 11  10/31: 7.1, 7.2, 7.3, E.V.  11/2: 7.1, 7.4  7.6, 9.1  11/4: 7.5, 7.4, 7.6, E.V.  HW 8 (due Wednesday 11/2) See week above 
Week 12  11/7: 7.6, 9.1 maple  11/9: ch7, 9.1, 9.1, maple 
11/11:
7.6, 9.1 double quiz 4 over ch 1, 7, and study questions, Answers 
HW 9 (due Wednesday 11/9) 7.1 (use matrix form): 4, 5, 6, 7, 15 7.4: 1, 5 7.5: 1, 5, 7, 24, 25, 27 7.6: 10 
Week 13  11/14: 9.2, maple, WolframAlpha  11/16: 9.3, maplenonlinear resonance ,  11/18: 9.3 
HW 10 (due Wednesday 11/16) 7.5: 19 7.6: 4 9.1: 20, 21 9.2: 5 
Week 14  11/28: 9.3  11/30: 2.6  12/2: 2.6, 3.6
double quiz 5, answers 
HW 11 (due Wednesday 11/30) 1.) Fully state 7 theorems that you would prefer to prove on the final exam (over other theorems). You do not need to provide proofs for this HW, just state the theorems. 2.) State at least one theorem that you do not want to prove on the final exam.
HW 12 (due Wednesday 11/30)
Read all HW answers for Ch 9 (see ICON). I STRONGLY recommend looking at each graph and
determining stability type. Then check your answer by reading the text associated to the graph. 
Week 15  12/5: review 3.1  3.4, 3.5, 4.1, ch 4 , 5.6  12/7: 5.6, notes  12/9: Revew 
HW 13 (due Wednesday 12/7) Problem 1: State one interesting question that has not been answered regarding ch 9. 4.1: 4, 6, 7, 8, 18, 19bc 9.3: 7
Recommended problems (not HW):
Extra Credit (due Wednesday 12/7, 2 points for each problem added to your HW grade) 
Final's Week  Monday, December 12, 2016 8:00 PM  10:00 PM in 205 MLH  2013 final exam, partial answers 