Math 3331, Differential Equations, 1:00-2:30 PM, Monday, Wednesday SEC 201.

The Final Exam for this class took place on Wednesday, May 9. The average score was 138.97 and the standard deviation was 35.03. This is the grading curve:

183-200 A   139-147 C+   96-103 D-
174-182 A-   131-138 C   0-95 F
166-173 B+   122-130 C-      
157-165 B   113-121 D+      
148-156 B-   104-112 D      

The second midterm exam in this course will took place on Wednesday, March 28.The average score was 56.29 and the standard deviation was 17.51. This is the grading curve:

79-100 A   57-60 C+   35-38 D-
74-78 A-   52-56 C   0-34 F
70-73 B+   48-51 C-      
65-69 B   44-47 D+      
61-64 B-   39-43 D      

The first midterm exam in this course took place onWednesday, February 14. The average score was 66.43 and the standard deviation of the scores was 21.66. This is the grading curve:

94-100 A   67-71 C+   40-44 D-
89-93 A-   62-68 C   0-39 F
83-88 B+   56-61 C-      
78-82 B   51-55 D+      
72-77 B-   45-50 D      

The textbook is Differential Equations, Second Edition, by J. Polking, A. Boggess and D. Arnold. Prentice Hall, 2006.

Here is the departmental syllabus. Here is the Peoplesoft syllabus.

You will need a copy of "dfield" and "pplane". Here is a version of dfield that I have fixed to work with the current version of Matlab. You can alsodownload the Java versions of dfield and pplane from http://math.rice.edu/~dfield/dfpp.html. You may also need to download and install a Java runtime (at your own risk!).

Here is a link to the homework assignments.

Grading

Your course grade will be based on a weighted average of normalized scores for the final exam, two midterm exams, and homework. The final exam will take place Tue. May 9, 11 AM - 2 PM in T 201. I am working on choosing date for the midterm exams.

Normalized scores. Suppose X is your final exam score, μ is the average score for the final, and σ is the sample standard deviation for the final exam scores. Then

ZX = (X - μ)/σ is your normalized score for the final exam.

In the same way, I compute normalized scores for the total of your homework scores, and for your midterm exam scores.

Your grade will be determined by a weighted average of normalized scores:

Grade = (1/5)*(zHW+ zMT1+ zMT2) + (2/5)*zFinal.

This means that each midterm exam counts (1/5), the Final exam counts (2/5), and the homework total counts (1/5).

The numerical result ‘z’ of this calculation will determine your grade as follows:

z › 1.25 1.0 ‹ z ‹ 1.25 .75 ‹ z ‹ 1.0 .5 ‹ z ‹ .75
A A- B+ B
.25 ‹ z ‹ .5 0 ‹ z ‹ .25 -.25 ‹ z ‹ 0 -.5 ‹ z ‹ -.25
B- C+ C C-
-.75 ‹ z ‹ -.5 -1.0 ‹ z ‹ -.75 -1.25 ‹ z ‹ -1.0 ‹ -1.25
D+ D D- F

If your Final Exam normalized score is higher than your lowest midterm exam normalized score, then I will replace the lowest midterm exam normalized score with the normalized final exam score.