Home Page of MA30400 (Min Chen), Fall 2018
DIFFERENTIAL EQUATIONS FOR ENGINEERING AND THE SCIENCES
Instructor: Dr. Min Chen
Office: MATH 418
Office Hours: WF 3:304:30pm
or by appointment; 
Email: chen45@purdue.edu 
TA: Mr. Can Cui
WebAssign
https://www.webassign.net/purdue/login.html
Course Web Pages (this page):
http://www.math.purdue.edu/~chen/ma304/syl.html
Text Books:
[1] Elementary Differential Equations and Boundary Value Problems, 10th edition, by BoyceDiPrima, Wiley, (required).
Tests:
There are two
night midterm exams and a comprehensive final exam.
Calculators, books and notes are not allowed during the
exams.
Important Dates 
Test 1 
Sep. 26, 6:30pm7:30pm, Math175 

Test 2 
Nov. 1, 6:30pm7:30pm, Math175 

Final Exam 
TBA 
Grading Policy:
Your course grade will be determined as follows:
15% from each midterm exam, 30% from the final exam,
20% from online homework, 10% from the handgraded homeworks and 10% from quizs.
Tentative Class Schedule (starts on 8/20/18) and homeworks
Hand graded homeworks are due at beginning of the classes on Mondays. When there is no class on Monday, it will be due on Wed..
Online homeworks' due date are posted online. There are about 5 quizes and the dates will be announced during the semester.
Week #  Sections  Hand graded HW 
Week 1  5.1, 5.2  5.2: 14(a)(b) 
Week 2  5.3, 5.4  5.4: 11 
Week 3  labor day, 5.5, 5.6  5.5: 6 Part(c)(d) only need to find the first three terms of each series solution 
Week 4  7.1, 7.2, 7.3  7.3: 25 
Week 5  7.4, 7.5  7.5: 18 
Week 6  Review  Test 1 
Week 7  7.6, 7.7  7.6: 7 
Week 8  7.8, 7.9  7.9: 5 (Initial condition x(1)=(0, 0)) 
Week 9  9.1, 9.2, 9.3  9.2: 15(a), 21(a) 
Week 10  9.4, 9.5  9.5: 13(a)(b) 
Week 11  Review  Test 2 
Week 12  10.1, 10.2, 10.3  10.1:15 
Week 13  10.4, 10.5  10.5: 8, bonus: detailed solution of Test 2 
Week 14  10.6  Thanksgiving 
Week 15  10.6, 10.7  10.6: 10(a)(b) (Value of alpha for copper is in Table 10.5.1) 
Week 16  10.8, Review  
Week 17  Final Exam  Final Exam 
Regrades or late homework:
If you disagree with the grading on a homework, you must provide a written explanation, including your reasons for disagreeing, and resubmit the work for regrading within one week after the work is first returned to the class.
If you have an approved late homework, you can submit the late homework with attached written explanation to TA.
Integrity:
Integrity: Academic integrity is expected of all students at all times in this course. You are free (even encouraged) to work with other students to solve the homework problems (talking about math may seem really geeky, but it can make learning the subject much easier and more fun). However, you are required to write up solutions to each assignment using your own words and explanations. Of course, you are required to do your own work on each exam (although you can prepare with others).
Makeup Policy:
There will be no makeup exams except in extreme
circumstances (such as: death in immediate family, military
obligation, etc.) at the discretion of the
instructor. The instructor has to be informed IN ADVANCE by email.
You will be asked to provide proper
documentation.
Attendance:
Class attendance is expected and I'll "spot check" attendance throughout the semester. I may deduct
up to 3% of
your grade if you miss more
than two of those random checks.
Emergency Preparedness:
In the event of a major campus emergency, course requirements, deadlines and grading percentages are subject to changes that may be necessitated by a revised semester calendar or other circumstances beyond the instructor's control. The primary way to get information about changes in this course is via this webpage and the course Blackboard page. Learn more at http://www.purdue.edu/emergency_preparedness/