JHR's MA222 page

MA222
Differential Equations II

MTRF 8/9, G222
John Rickert, Associate Professor of Mathematics
Office: G-215A, Crapo Hall
Phone: (812) 877-8473
Campus mail: CM 141
e-mail: john.rickert@rose-hulman.edu
Office hours: MTRF 7, or stop by and see if I'm in. My schedule
policy       _ grade weights       Notes      
A Maple file containing the work for the spring-mass system worked out in class Tuesday is now available.
The Final Exam takes place Thursday, May 25.

Homework

Today's homework (for tomorrow's class)

For Tuesday, March 7: Section 10.1 #1,3,6,8,11,18,23,26,39,40,41. Turn in these exercises on Thursday.
For Thursday, March 9: Section 10.2 #1,5,9,10,17,28,37. Turn in the section 10.1 exercises.
For Friday, March 10: Section 10.2 #2,11,12,15,20,24,31. Turn in these exercises on Monday.

For Monday, March 13: Section 10.3 #2,3,6,10,12,16,23,29,33,40. Turn in these exercises on Tuesday.
Turn in the homework discussed Friday.
For Tuesday, March 14: Review sections 10.1-10.3. Turn in the section 10.3 exercises.
For Thursday, March 16: Section 10.4 #4,9,13,18,20,27,32,40. Turn in these exercises on Friday, March 24
The is no class Friday, March 17.

For Monday March 20: Begin looking at the supplementary homework.
For Tuesday, March 21: Section 10.5 #1,3,13,20,25,29,33,36.
For Thursday, March 23: p D-11 #5,8,13,17,22.
For Friday, March 24: Section 6.1 #1,4. If there are questions about the supplementary homework we will discuss them.
Turn in the section 10.4 homework.

For Monday, March 27: Section 6.1 #1,4,13,26,29,33,41.

For Tuesday, March 28: Turn in the Section 6.1 homework.
Come with questions about LaPlace transforms and eigenvalues/eigenvectors.
Thursday, March 30: Exam #1. The average score on the exam was 79.3 out of 120. Equivalent grades: A 95-112, B 80-94, C 65-79, D 50-64.
    Turn in the supplementary homework before the exam.
Friday, March 31: No class due to the Undergraduate Mathematics Conference.

For Tuesday, April 4: Section 7.1 #1,4,10,13,17,19,24,25,26,28. Turn in these exercises Thursday, April 6.
For Thursday, April 6: Section 7.2 #1,5,12,15,21,24,30.
Turn in the Section 7.1 exercises.
For Friday, April 7: Section 7.3 #1,7,14,17,23,27,31,41,45. Turn in these exercises Tuesday, April 18.
The spring-mass Maple file from class is now available.

For Monday, April 17: Section 7.4 #1,3,9,13,16,21.
For Tuesday, April 18: Turn in the Section 7.3 exercises.
For Thursday, April 20: Section 7.5 #1,8,19,24,27,33,35. Turn in these exercises Monday, April 24.
For Friday, April 21: Section 8.2 #1,7,10,15. Turn in these exercises on Thursday, April 27.
An example file with some Maple commands for working with systems is now online.
For Monday, April 24: Section 8.2 #19. Turn in this exercise on Thursday, April 27. Turn in the Section 7.5 Exercises.
For Tuesday, April 25: Section 8.2 #13,20,27,28,31,34. Turn in these exercises on Thursday, April 27.
An example file with some Maple commands is online
For Thursday, April 27: Section 7.6 #1ab,3ab,5ab, 17,19.
A Maple file with some syntax relevant to variation of parameters and Euler's method.
Turn in the Section 8.2 homeworks.
Friday, April 28: Exam #2
For Tuesday, May 2 Section 9.1 #1-8,11,14,24.
For Thursday, May 4: Section 9.2 #1,7,13,21,25,26,31,33. Turn in these exercises Friday, May 5.
For Friday,May 5: Section 9.3 #4-7,18-25,29,30. Turn in these exercises Monday, May 8.

For Monday, May 8: Section 9.4 #2,6,12,17,28,20,23,25. Turn in the Section 9.3 homework.
Tuesday, May 9: No class.
For Thursday, May 11: p D-22: #2,6,12,17,20,23,25.
A Maple file with a small example Fourier series is online.
Friday, May 12: Exam #3

For Monday, May 15: pp D28-29: #1,7,10,11,14,17,20,25. Turn in these exercises Tuesday, May 16.
For Tuesday, May 16: p D-40: #2,5,8,9,11,15.
Turn in the exercises from pD28-29.
For Thursady, May 18: p D-48:#1,3,7,9,10,13,14,18.
For Friday, May 19: Section 11.1: #1,5,8,11,19,25.

Notes

Thursday, March 9: A Maple file containing the work for the spring-mass system worked out in class today is now available.
Tuesday, March 14: A Maple file containing the work for the spring-mass system worked out in class Tuesday is now available.
Monday, March 20: The Maple command for the unit impulse function is Dirac(t). The Maple command for the unit step function is Heavside(t).
Friday, April 7: The spring-mass Maple file from class is available.

We will be covering

Course Policy

Material added since the beginning of class will be in purple
This class will have three in-class exams - most likely during the 4th, 6th or 7th, and 9th weeks.
Note: I don't set grades using a 93/86/77/70 "straight scale" system. I plan to challenge you to excel. This means that the exam averages will generally be lower than what you are used to.
The final exam will be given during finals week. If you are making arrangements for travel home, you should make sure that they will not conflict with the final exam schedule. If your parents will be purchasing airline tickets for you, you should contact them and remind them not to schedule you on a flight that might cause you fail a class.
The weights for the grade are given below.
There may be two other types of quizzes given in class: announced and unannounced.

A stapler is probably a good investment for most of you. Multi-page homeworks should be stapled together, not mutilated.
Homework will typically be due at the beginning of class on the due date. Homework may be turned in later but will be penalized based on just how late it is - typically 10% off per day. i.e. 10 days later, it's too late to get a makeup homework turned in.
When writing up homework, you should circle (or otherwise clearly indicate) your answers. If the homework is on a worksheet that is passed out to the class, you will generally be expected to write your answers on a separate sheet of paper, in a well-organized fashion. Answers should be written on the worksheet only if answer blanks have been specifically provided.
If you have any questions while I'm not around, you may e-mail me at rickert@rose-hulman.edu and I will reply as soon as I can.

You should come to class prepared. This means that I expect you to have done the homework, brought your book to class and launched Maple at the beginning of class.

I will assign some `group' projects in this class. Groups will consist of either three or four members. Write-ups from smaller or larger groups will not be accepted unless prior approval has been given.
Write-ups should be neatly presented. Write-ups returned on the information sheet handed out to the groups will not be accepted. Write-ups handed in at the end of class may be hand-written. Write-ups for work outside of class should be typed. Maple code may be included as part of an appendix or in figures, but should not be considered as a `formal' write-up. Similarly, `scratch-work' is unacceptable. Neatly written partial results may be turned in, but scribbles will reduce your grade.

A summary of the grade weights

There will be three in-class exams worth 15% each
The final exam will be worth 30%
Quizzes and homework will be worth 25%
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