University closing information

Final rescheduling information

Math 331.2: Fall 2008

Instructor : Luc Rey-Bellet
 Office :  1423 J LGRT
 Phone :  545-6020
 E-Mail :   luc <at> math.umass.edu
 Homepage:   http://www.math.umass.edu/~lr7q
 Office Hours :   Tu 9:45--10:45 and Th 1:30--2:30   or by appointment.

Class Meeting : TuTh 11:15--12:30    LGRT 219


Teaching Assistant: The teaching assistants for Math 331 are Allison Tanguay and Diego Belfiore. They will hold office hours to go over homework, examples, prepare for exams, answer questions, and so on...

Instructor :   Diego Belfiore
 Office :   LGRT 1423I
 Phone :   545-0840
 E-Mail :   belfiore <at> math.umass.edu

Office hours: M 5:00-7:00,   LGRT 1334     Th 1:00--3:00,   LGRT 1423 I
Instructor :   Allison Tanguay
 Office :   LGRT 1335E
 Phone :   545-1714
 E-Mail :   tanguay <at> math.umass.edu

Office hours: Tu 5:00--7:00, Th 5:00--7:00   LGRT1234


Syllabus: This course is an introduction to ordinary differential equations. The topics covered in this class are Prerequisites are Math 132, corequisite are Math 233.


Text : Differential Equations, 3rd edition by P. Blanchard, R.L. Devaney and G.R. Hall. Brooks Cole. (ISBN-10: 0495012653 ISBN-13: 978-0495012658)


Course Web page: www.math.umass.edu/~lr7q/m331-fall2008/m331home.html It will be updated regularly. Check it often for informations about homework and exams!


Grading : There is a final exam worth 1/3 of the grade and one midterm exam also worth 1/3 of the grade. Homework will be assigned weekly, collected and graded, the 10 best homework will be used to compute the last third of your grade. No late homework, no really.

  Scales for letter grades:     A : 90     A-: 87     B+: 83     B : 80     B-: 77     C+: 73     C : 70     C-: 67    D+: 63    D : 60     F : <60


Exam schedule : There will one midterm exam and one final exam. The material covered in the first midterm will be announced in due time. The final exam is comprehensive but will cover mostly the material of the second half of the semester.

Weekly Schedule: Homework and deadlines

Week 1 (September 1):

Week 2 (September 8):

  • Homework #1 (due on Thursday September 11)
    Section 1.1 : 2, 4, 10, 12, 20
    Section 1.2 : 8, 12, 26, 28, 34

    Week 3 (September 15):     (Monday September 15 is the last day to add or drop with no record)

  • Homework #2 (due on Thursday September 18) :
    Section 1.3 : 14, 15
    Section 1.5 : 14 ,
    Section 1.6 : 2, 8, 14, 20, 32, 37, 39

    Week 4 (September 22):    

  • Homework #3 (due on Thursday September 25) :
    Section 1.7 : 3, 4, 11, 21(a,b)
    Section 1.8 : 1, 4, 11, 21, 24, 31

    Week 5 (September 29):

  • Homework #4 (due on Thursday October 2):
    Section 1.9 : 2, 5, 10, 15, 25
    Section 2.1 : 8, 15, 19, 20, 22

    Week 6 (October 6):    

  • Homework #5: (due on thursday October 9)
    Section 2.2 : 7 (a,b), 11, 21
    Section 2.3 : 7, 10, 17, 18,
    Section 3.1 : 24, 27, 28

    Week 7 (October 13):     (Monday is Colombus day, tuesday is a monday )


  • MIDTERM on Thursday October 16, 7:00 pm     Room : TBA

  • Homework: No homework is due this week but the following practice problems are a good preparations for the test.

    Review exercises for Chapter 1, pp.138: Look at the problems 20--40 carefully. Do you know which strategy to use to solve them? Do the problems 42, 43, 50, 52, 56, 57.
    Review exercises for Chapter 2, pp. 220: 5, 7, 11, 26(abc), 27(a,b,c),
    Various     practice problems from previous exams.

    Week 8 (October 20):    

  • Homework #6 : (due on thursday October 23, extended to Tuesday October 28!)
    Section 3.2 : 2, 3, 5, 11, 23
    Section 3.3 : 2, 3, 5, 9, 15

    Week 9 (October 27):     ( Monday October 27 the last day to drop with "W")

  • Homework #7 : (due on thursday October 30)
    Section 3.4 : 1, 5(abcd), 6(abcd), 11, 12, 15
    Section 3.5 : 3, 7, 11, 19


    Week 10 (November 3):

  • Homework #8: (due on thursday November 6)
    Section 3.6: 1, 10, 11, 17, 19, 20, 25, 27, 28, 35,


    Week 11 (November 10):

  • Homework #9 : (due on thursday November 13)
    Section 3.7 : 3, 5, 11, 12,
    Section 4.1 : 3, 4, 11, 22, 25, 34

    Week 12 (November 17):    

  • Homework # 10 : (due on thursday November 20)
    Section 4.2 : 6, 7, 13, 17,
    Section 4.3 : 2, 5, 11, 16, 17, 21

    Week 13 (November 24): (Thanksgiving week)


    Week 14 (December 1):

  • Homework #11 (due on thursday December 4) :
    Section 6.1 : 2, 10, 13, 20, 21, 22
    Section 6.2 : 1, 5, 10, 11,

    Week 15 (December 8): ( Friday December 12 is the last day of class)
  • Homework #12 : (due on thursday December 11)
    Section 6.3 : 15, 17, 29, 30, 32, 33
    Section 6.4 : 2, 3, 5, 6,