2280 due dates for submitted work

Updated: Friday April 24: 12:20PM, 2009     Today: Friday November 22: 13:22PM, 2024

Revised Due dates for 2280

  1. 03 Apr, 5.2: 32, 36,
  2. 06 Apr, 5.3: 3, 16, 19,
  3. 07 Apr, 5.4: 12, 25, 35. Do these with the Laplace resolvent.
  4. 07 Apr, MapleLab6: L6.1, L6.2, L6.3,
  5. 08 Apr, 5.5: 3, 15, 23, Use the Cayley-Hamilton Method or Putzer's formula.
  6. 10 Apr, 5.6: 16, 31, Use web slides on maple and var of parameters.
  7. 10 Apr, Last day for extra credit work ch1,ch2,ch3,ch7.
  8. 13 Apr, 6.1: 20,
  9. 14 Apr, 6.2: 15, 27, 37,
  10. 15 Apr, 6.3: 5, 8, 9, 10, 13, 17,
  11. 17 Apr, 6.4: 12,
  12. 17 Apr, 6.5: nothing due
  13. 17 Apr, MapleLab7: L7.1 to L7.5
  14. 20 Apr, 9.1: 23, 27,
  15. 20 Apr, Final Exam Review.
  16. 21 Apr, 9.2: 17,
  17. 22 Apr, 9.3: 4, 9, 20,
  18. 24 Apr, Midterm Exam 3
  19. 27 Apr, 9.4: 8, 15, 18,
  20. 27 Apr, 9.5: 3, 14, 17, 19,
  21. 28 Apr, 9.6: 3, 6, 11, 13, 14, 15, 16, 17, 19,
  22. Never due, 9.7: 5, 9, 11,
  23. 29 Apr, Final Exam Review
  24. 30 Apr, Reading day
  25. Changes to the original plans for HW collections. No change to exam topics.
    Sections 6.3, 6.4, 9.1. 9.2. 9.3. 9.4, 9.5, 9.6 are extra credit applied to the whole semester. My plan was to give enough free time to learn well the topics in chapters 1-7. We don't do ch8, by design. I could do 9.1-9.3 in the lecture days left, but I feel the time is better spent on review of ch1-7.

    Exams slowed us down by 2 lecture days. Adding the Putzer method and applications took one more lecture day. If there is a need for a Final Exam Review [2 hours] on Thu-Fri of the last week of classes, then that can happen. Otherwise, I will hold office hours those days instead.

    Maple L6 is required.
    Maple L7 is extra credit applied to the whole semester.

    About 4 people so far have done 9.1, 9.2 problems and I am glad for that, because the result is some progress on Fourier series.
  26. Chapter 4 problems and hints. This is a study-yourself chapter, with the problems the only evidence that you read it.
  27. 10 Mar, 4.1: 2, 27. 4.1-2: See Ex 4, p 249. 4.1-27: See Ex 3, p 248.
  28. 11 Mar, 4.2: 8, 34. 4.2-8: Use the Laplace resolvent formula, (s I -A)L(u)=u0 + L(F). 4.2-24: Subtract the equations to get x+y=t^2-t. The first equation then reads (t^2-t)' + 2(t^2-t)=t, which is false. Conclude there is no solution. 4.2-34: Solve the equations in problem 4.1-26, using Laplace resolvent method, or Cayley-Hamilton method. The latter is the same as the method of elimination in section 4.2.
  29. 13 Mar, 4.3: 10, 17. Please skip these, there is no time for the numerical topics.
  1. 31 Mar, MapleLab3: L3.2, L3.3, L3.4,
  2. 31 Mar, MapleLab4: L4.2, L4.3, L4.4,
  3. 01 Apr, midterm 2, last 4 problems. See the web site for a solution key to all problems on last week's exam.

Tentative Due dates for 2280 

 Differential Equations 2280
 Spring Semester 2009
 Edwards-Penney, DE and BVP, 4/E
 Graded Problems

Week 1, Jan 12-16
Sections 1.2, 1.3, 1.4, 1.5.

 14 Jan, 1.1: 8, 12, 35, 39,
 16 Jan, 1.2: 5, 10, 17, 37,

Week 2, Jan 19-23
Sections 1.6, 2.1, 2.2, 2.3.

 19 Jan, Holiday Monday.
 20 Jan, 1.3: 33,
 21 Jan, 1.4: 3, 11, 19, 54,
 23 Jan, 1.5: 9, 15, 39,

Week 3, Jan 26-30
Sections 2.4, 2.5, 2.6, 3.1, 3.2.

 26 Jan, 1.6: 18, 63,
 27 Jan, 2.1: 7, 30,
 28 Jan, 2.2: 9, 21, 23,
 30 Jan, 2.3: 2, 24,

Week 4, Feb 2-6
Sections 3.3, 3.4, some of 3.5

 03 Feb, Maple Lab1:L1.1, L1.2, L1.3, L1.4
 04 Feb, 2.4,2.5,2.6: Maple L3.1, L4.1
 Parts 2,3,4 of Maple Labs 3,4 due after Spring Break
 06 Feb, 3.1: 5, 25, 46,

Week 5, Feb 9-13 Sections 7.1, 7.2, 7.3

 10 Feb, 3.2: 4, 15, 23,
 11 Feb, 3.3: 10, 15, 28, 40, 46,
 13 Feb, 3.4: 10, 13, 35, 36, 37, 38,

Week 6, Feb 16-20 Sections 7.4, 7.5, 7.6.

 16 Feb, Holiday Monday.
 17 Feb, 7.1: 4, 15, 25, 33, 35, 36, 41,
 18 Feb, 7.2: 19, 24, 35,
 20 Feb, 7.3: 3, 7, 13,
 20 Feb, Maple Lab2: L2.1, L2.2, L2.3, L2.4,

Week 7, Feb 23-27 Sections 3.5, 3.6, 3.7

 24 Feb, 7.4: 3, 14, 17, 23, 26,
 25 Feb, Midterm Exam 1
 27 Feb, 7.5: 5, 14, 33,

Week 8, Mar 2-6
Sections 4.1, 4.2, 4.3, 5.1.

 03 Mar, 7.6: 15, 17, 21,
 04 Mar, 3.5: 1, 5, 7, 9, 34, 37, 41, 45,
 06 Mar, 3.6: 4, 17,  23,
 06 Mar, 3.7: 8, 14,

Week 9, Mar 9-13 Sections 5.2, 5.3, 5.4, 5.5.

 10 Mar, 4.1: 2, 27,
 11 Mar, 4.2: 8, 34,
 13 Mar, 4.3: 10, 17,
 13 Mar, 5.1: Nothing due
 13 Mar, MapleLab6: L6.1, L6.2, L6.3,

Spring break Mar 16-21.

Week 10, Mar 23-27
Sections 5.6, 6.1, 6.2, 6.3.

 24 Mar, 5.2: 32, 36,
 25 Mar, Midterm Exam 2
 27 Mar, 5.3: 3, 16, 19,
 27 Mar, MapleLab3: L3.2, L3.3, L3.4,

Week 11, Mar 30,31 and Apr 1,3
Sections 6.3, 6.4, 6.5.

 30 Mar, 5.4: 12, 25, 35,
 31 Mar, 5.5: 3, 15, 23,
 01 Apr, 5.6: 16, 31,
 03 Apr, MapleLab4: L4.2, L4.3, L4.4,

Week 12, Apr 6-10
Sections 9.1, 9.2, 9.3.

 07 Apr, 6.1: 20,
 08 Apr, 6.2: 15, 27, 37,
 10 Apr, 6.3: 5, 8, 9, 10, 13, 17,
 10 Apr, 6.4: 12,
 10 Apr, 6.5: nothing due
 10 Apr, MapleLab7: L7.1 to L7.5

Week 13, Apr 13-17
Sections 9.4, 9.5, 9.6.

 14 Apr, 9.1: 23, 27,
 15 Apr, 9.2: 17,
 17 Apr, 9.3: 4, 9, 20,

Week 14, Apr 20-24
Section 9.6, 9.7, Final Review.

 20 Apr,  Final Exam Review.
 21 Apr, 9.4: 8, 15, 18,
 22 Apr, 9.5: 3, 14, 17, 19,
 24 Apr, Midterm Exam 3

Week 15, Apr 27-29
Final Exam review. Lectures end Apr
29. Reading day Apr 30.}

 27 Apr, 9.6: 3, 6, 11, 13, 14, 15, 16, 17, 19,
 28 Apr, 9.7: 5, 9, 11,
 29 Apr, Final Exam Review

Week 16, May 1-8
Final exam period.

6 May, Final Exam, 7:30-10:00am, regular classroom.

Policy on Dailies: The highest 150 dailies will be
counted. The lowest 8 of the 158 dailies will be
dropped. Any record with less than 70 daily scores
earns a grade of E, regardless of midterm and
final exam scores. Deadlines set at web site
http://www.math.utah.edu/~gustafso/. Work not in
the stack sent to the assistant is late and it
earns a grade of zero. Zeros can be erased by
doing extra credit problems.

Policy on Exams: The final exam is doubled before
determining the exam average, to count like two
midterms.

Grading Scale: A~ = 95-100, A- = 92-94, B+ =
88-91, B~ = 84-87, B- = 80-83, C+ = 75-79, C~ =
65-74, C- = 60-64.

Final Grade: 0.7(exam ave) + 0.3(dailies ave)