Lecturer:Ryan Goh

Lectures:Tuesday, Thursday, 9:30-10:45 am; PHO 206

Office Hours: MCS 243, Tuesday 1-3pm (priority given to students of MA 226-A1),

Wednesday 10a-12pm (priority for another class I am teaching),

or by appointment, please provide availability when requesting an appointment

Syllabus page here

Textbook:"Differential Equations," 4th edition, by Blanchard, Devaney, Hall, Second Edition. A link to the textbook can be foundhere.

You will also need a copy of the DE tools software that comes with the textbook, this can be downloaded for free on the publishers website . Note you will need Java runtime software (v8) to run this software.

## Course Announcements

I will post any important updates here.9/16:My office hours for the week of September 20th will be the following:Tuesday 12p-1:30p virtually on my MA 226 Campuswire live room "#prof-goh-public-office-hours" ## Homework

All assignments must be uploaded via the Gradescope application which can be accessed in Blackboard under the tab "Homework Turn-In." See these links for guidelines and an example of a homework solution. Problems only listed in the "Assignment" category should be turned in. Homeworks are due each Thursday at 9am.

See the aforementioned guideline document for how to compose your homeworks and submit them. There you will also find links on how to scan/upload and submit them using Gradescope.

Due Date Reading Assignment Suggested problems 9/9 Section 1.1, 1.2 On a piece of paper, write out what you hope to get out of this class and how you wish to use it going forward, then scan and submit it via Gradescope. This will help me calibrate lectures and help you get acquainted with Gradescope. Any assigment uploaded by the due date will be given full credit. Pg. 14-17#2,4,5,6,7,12;

Pg. 33-34#1,2,6,13,17,25,28,409/16 HW 1: Section 1.2, 1.3,1.4 Pg. 33-36#40 ;Pg. 47-51#10,13,14;Pg 61-63#6,11 (note: a spreadsheet which runs Euler's method, for two example diff. eq.s can be found here in Excel format and in Mac Numbers format );Pg. 33-36#35,37,39;

Pg. 47-51#2,6,7,9,16,19;

Pg 61-63#2,3,10,17;9/23 HW 2: Section 1.5,1.6,1.7 Pg. 72-73#11, 16;Pg. 89 - 93#4,16,26;Pg.106 -107#4;Pg. 72-73#1,5-8, 13,14,18;Pg. 89-93#1,2,7,9,21,28,29,32,34,36, 39;Pg 106-107#2,7,13;9/30 HW 3: Section 1.7, 1.8,1.9 Pg. 106 - 108#11,19 ;Pg. 121 - 124#4,12,17 ;Pg. 133 - 134#4,10;Pg. 106 - 108# 9,12, 13,15,18,19;Pg. 121 - 124#2, 6, 7,9,11,16, 19-22,25,29;Pg. 133 - 134#1,6,9,10;10/7 No Homework this week Pg. 106 - 108# 9,12, 13,15,18,19;Pg. 121 - 124#2, 6, 7,9,11,16, 19-22,25,29;Pg. 133 - 134#1,6,9,10;10/14 HW 4: Section 2.1, 2.2,2.3 Pg. 161 - 166#1,4,8,20;

Pg. 178 - 183#6,8,16;

Pg. 161 - 166#1-4,7,9,15,16,20,21,22,23,24;

Pg. 178 - 183#1-6,7,10,11,19;

Pg. 187-188#5,6;

10/21 HW 5: Section 2.3-2.6 Pg. 187-188#6,#7,

Pg. 194-195#2,6, 13;

Pg. 202-204#1,2; An apple/mac spreadsheet which runs Euler's method for a 2D-system can be found here, and an Excel version here

Pg. 187-188#8,9

Pg. 194-195#5,7, 9,13;

Pg. 202-204#4,6;

Pg. 208-209#1,2,9,10;10/28 HW 6: Section 2.6,2.7, Chapter 2 Review Pg. 208-209#3-5;

Pg. 214-216#6-8;

Pg. 208-209#11;Pg. 214-216#9-10;

Pg. 224 - 228as many problems as you have time for!11/4, HW 7: Section 3.1 - 3.3 Pg. 258-26410, 16,24;

Pg. 277-2802,6,16,19;

Pg. 293- 2962,4;Pg. 258-2641-4,6-8,12,15,17, 20-23,25, 26,31,33,34,35;

Pg. 277-2801-8,11,14,17,18, 21,23;

Pg. 293-2961-9,12;27

11/11, 10:00AM HW 8: Section 3.3-3.5 Pg. 295-29613, 20

Pg. 310-3142,4,6,10,12,

Pg. 327-3302,6

Pg. 295-29619,

Pg. 310-3141,3,5,7,9,11,13,15,19,21, 23

Pg. 327-3304,8,10-13,16,17-19,20-23

11/18, 10:00AM HW 9: Section 3.5, 3.7 Pg. 327-33021,22

Pg. 358-3602,4,11

Pg. 327-3304,8,10-13,16,17-19,20-23

Pg. 358-3603,9,10,12,13

12/2, 10:00AM HW 10: Section 3.6, 4.1, 4.2,4.3 Pg. 342-34615, 16

Pg. 399-4028,14,20

Pg. 412-4142,4,15

Pg. 424-4264

Pg. 342-34613-28,

Pg. 399-4029,11,13,15,25,27, 28

Pg. 412-4145-9,16,17,21,22

Pg. 424-42612,15,16,21

12/9 HW 10: Section 5.1,5.2 This assignment is for you to get practice with Ch. 5 material and does not need to be turned in. Pg.472-4771,2,4,11,13,17,20,22

Pg 487 - 4901,3,5,6,13,21,22

## Midterm and Final information

There will be two midterms during the semester. They will be held during lecture, in the regular location, onThursday, September 30thandThursday November, 11th. Logistics of each exam will be discussed during class.

The tentative date for the final exam listed in the standard exam matrix isWednesday, December 15th, 9am-11am, in the normal lecture location. No early finals will be given and please plan your end-of-semester travel accordingly.## Grades

Your course grade will assigned as followsHomework scores (15%) - two lowest scores dropped Quizzes (10%) - two lowest scores dropped, Midterm 1 (20%) Midterm 2 (25%) Final exam (30%)

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