 Instructor: Dr.
Dashun Xu
Office: 273
Neckers Hall A Wing
Office Hours: MWF 8:30-9:50am, 2:00pm-2:50pm, or by
appointment
E-mail: dashunxu@siu.edu Phone: 453-6512
Zoom meeting room: 222 336 4190
Syllabus (Attachment for more useful
webpage and dates)
Textbook: Elementary
Differential Equations & Boundary Value Problems, by Boyce
and DiPrima
10th ed
Grading scale:
Grading
Scale
Grades
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Midterm
exams
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35
|
|
Homework
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25
|
|
Final
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32
|
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Attendance
(deduct 1 point per missed class meeting)
|
8
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Important dates
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Semester Classes Begin
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Monday,
August 21
|
|
Last Day to Register
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Sunday,
August 27
|
|
Last Day to drop w/ Reg.
Office
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Friday,
September 1
|
|
Last Day to Drop with Refund
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Sunday,
September 3
|
|
Labor Day Holiday
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Monday,
September 4
|
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Last Day to Drop w/o Refund
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Sunday,
October 29
|
|
Thanksgiving Break
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Sat, Nov 18
– Sun, Nov 26
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Thanksgiving Holiday
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Thurs, Nov
23 – Fri, Nov 24
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Final Examinations
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Mon, Dec
11 – Fri, Dec 15
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Homework:
All
assignments will be collected every Friday in class and only a few questions in each
assignment will be graded. Late homework will not be accepted. The
followings are problems assigned last time. I will update these
problems after each class meeting. Please make sure to refresh the webpage
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Date
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Homework
|
|
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Week 1
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Announcement 1 and 2 posted above. Due on Fri in
class
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Please use the 10th
edition of the textbook to do the homework problems. Otherwise, will
be marked wrong!
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Week 2
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1.3: 1-6, 8, 9;;
2.1: find the
general sol. to 1,3,5,7
2.1: (find the
general solutions, i.e. part c ) 9,11, 13, 15,
2.2: 1, 2, 5, 6, 7, 13(a,c)
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Due on Fri.
Please donot
forget to staple your homework sheets together.
This webpage is updated according to the lecture
pace on MWF. That is, you can get all HW due on each Fri till Wed
after class.
|
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Week 3
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2.1: 17, 19;;
2.2: find the
solution to 14, 22;
2.6: 3, 7, 11, 15
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|
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Week 4
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2.6: 9, 13
(find the solution);
2.6: (optional: 21; 22,)
2.6: 25, 26, 27, 28, 30;
2.4: 2, 5, 7, 11
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Practice exam 1 (for
you to review Chap 2)
HW due on Fri.
|
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Week 5
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2.4: 28, 29, 30, 31
2.5: 3, 4, 7, 10
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HW due on Fri.
Exam delayed to Week
6 Fri.
I will check your
Practice Exam 1 on Wed. in class
Collect Practice Exam 1 on Fri.
|
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Week 6
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3.1: 1, 3, 9, 13, 15, 20
3.2: 9, 13, Optional: 3, 5, 11, 26
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HW also due on
Fri.
Exam on Fri.
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Week 7
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3.2: 9, 13, Optional: 3, 5, 11, 26
3.3: 7, 11,
17, 20, 21 Optional 9, 12, 15, 19
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Since some student complained
that there are too many homework problems, I moved some to optional.
I still strongly recommend you to do all if possible.
Due on Fri.
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Week 8
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3.4: 7, 9, 11, 13, 23, 27, 29, Optional:
12, 25, 28, 30,
3.3: 21
3.5: 1, 5,
3.5:
21(a, donot solve), 22a,
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Practice for Chap3
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Week 9
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3.5: 3, 7, 9,
3.5: 16, 17, 23a, 25a, 27a; Optional: 6, 8, 10, 18, 19
3.6: 5,
7, 13, 17,
optional: 3, 4, 14, 16, 18
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Due on Fri.
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Week 10
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4.1: optional:
14, 15, 16
4.2: 11, 14, 22, 31, find
solution to IVP: 32; optional: 13, 16, 18, 19, 24, 35
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|
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Week 11
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4.2: 17, find solution to IVP:
29
4.3: 2, 3, 6, 9,
4.3: 13, 15, 16, 17, Optional: 1, 10, 12, 14, 16, 18
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Practice for Chap4
HW due on Fri.
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Week 12
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4.4: 2, 3, 9
10.1: 1, 3, 4
10.1: 14, 16, 18
Optional: 2, 5,
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Homework due on
Fri.
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Week 13
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10.2: 13, 15
HW due also on Fri.
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Second
Exam on Fri!!!
Covering
Chap3, 4, and 10.1.
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Week 14
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10.2: 14, 16
10.3: 1, 2, 3,
10.3: 7a,
9a, 11a
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Due on Fri
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10.4: 7, 8, 9, 15, 16, 24(a,b)
10.5: 1, 2, 5, 6,
Optional: 10.5: 7, 8 after watching the video for 10.5.
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Week 15
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Practice for the final:
Midterm exams and their practice exams,
homework problems for Chap10.2—10.5
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Study Hint:
Find at least one or
two other students from the class with whom you can regularly do
homework and prepare for exams. Your classmates are perhaps the least
used and arguably your best resource. An efficient and effective study
group will streamline homework and study time and greatly improve your
written and spoken communication. The best time to use your classmates
as study/homework partners is after you have made an honest effort
on your own to solve the problems using your own wits, knowledge,
and experience. When you encounter an unsolvable problem, don't give up
too soon on it. Being stumped is an opportunity for mathematical growth
and insight, even if you never solve the problem on your own. If you
seek help prematurely, you will never know if you could have solved a
tough problem without outside assistance.
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