 Instructor: Dr.
Dashun Xu
Office: 273
Neckers Hall A Wing
Office Hours: MWF 11:55-12:55pm, 1:55pm-2:55pm, or by
appointment
E-mail: dashunxu@siu.edu Phone: 453-6598
Zoom meeting room: 222 336 4190
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 19
|
|
Last Day to drop w/ Reg.
Office
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Friday,
August 30
|
|
Last Day to Drop with Refund
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Sunday,
September 1
|
|
Labor Day Holiday
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Monday,
September 2
|
|
Last Day to Drop w/o Refund
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Sunday,
October 27
|
|
Fall Break
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Friday, October
18
|
|
Veterans Day
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Monday, November
11
|
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Thanksgiving Break
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Nov 23 – Dec
1
|
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Final Examinations
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Dec 9 –
Fri, Dec 13
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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 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.
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Week 7
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3.3: 7, 11,
17, 19, 21 Optional 9, 12, 15, 20
3.4: 7, 11, 13, 23, 27, 28, Optional: 12, 25, 29, 30,
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If possible, I still strongly
recommend you to do all problems.
Due on Fri.
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Week 8
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3.5: 1, 3, 16, 18
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Practice for Chap3
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Week 9
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3.5:
5. 7, 9, , 17,
3.5:
21(a, donot solve), 22a,
23(a), 24(a), 25(a)
3.5: Optional:
6, 8, 10, 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, 16, 18, 20, 22, find
solution to IVP: 31; optional: 13, 18, 19, 24, 35
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|
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Week 11
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4.2: 17, 19, 23, 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,
Optional: 2, 5,
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Homework due on
Fri.
Second
Exam on Fri???
Covering
Chap3, 4, and 10.1.
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Week 13
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10.1: 18
10.2: 13, 15
HW due also on Fri.
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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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|
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10.4: 7, 8, 9, 15, 16, 24(a,b)
10.5: 1, 2, 5, 6,
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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Final exam:
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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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