# Math 4233 - Intermediate Differential Equations

http://math.okstate.edu/people/lebl/osu4233-f17/

Lecture: TR 2:00-3:15pm MSCS 514

## Lecturer:

Jiří Lebl
Web: http://math.okstate.edu/people/lebl/
Office: MSCS 505
Office hours: 3:30-4:30pm Tu Th, 11:30-12:30pm We, and by appointment at other times.
Office phone: (405) 744-7750
Email: lebl at okstate dot edu

## Text:

Notes on Diffy Qs, by Yours Truly,
or on amazon as a cheap paperback.

The plan is to cover chapters 3, 8, 4, and 5 in that order.

The grading scheme is given below:

$\begin{multline} \text{Grade} = 0.2 \times \text{(Homework)} + 0.2 \times \text{(Exam 1)} \\ + 0.2 \times \text{(Exam 2)} + 0.4 \times \text{(Final Exam)} \end{multline}$

To account for bad exam day, etc..., an alternative grade will be computed as follows

$\begin{multline} \text{Grade} = 0.2 \times \text{(Homework)} + 0.1 \times \text{(Exam 1)} \\ + 0.1 \times \text{(Exam 2)} + 0.58 \times \text{(Final Exam)} \end{multline}$

A second alternative (to account for bad final day) will be follows

$\begin{multline} \text{Grade} = 0.2 \times \text{(Homework)} + 0.3 \times \text{(Exam 1)} \\ + 0.3 \times \text{(Exam 2)} + 0.18 \times \text{(Final Exam)} \end{multline}$

The highest of the three will be used for your grade. Notice that in the alterative schemes, the score does not sum to 100 percent. That is on purpose! You should count on the first scheme, the second/third schemes are only to account for things going terribly terribly wrong on one of your exams.

## Exams:

Exam 1: Tuesday, September 26, (in class)

Exam 2: Thursday, November 2, (in class)

Final Exam: Tuesday, December 12, 2:00-3:50pm (same room as the class), Comprehensive, think of the final exam as half exam 3 and half comprehensive final

Exam Policies: No books, calculators or computers allowed on the exams or the final. One page (one sided) of notes allowed on the exams.

## Homework:

Assigned weekly (some weeks may be skipped). Homework will be done using WeBWorK. Go to:
https://webwork.math.okstate.edu/webwork2/MATH-4233-F17/
You have been sent instruction on how to log in by email.

Lowest 2 homework grades dropped (so no late homeworks).

## Missed Work:

No makeup or late homework (two lowest are dropped anyhow), but feel free to turn homework in early if you you cannot for whatever reason turn it in on time. For exams, there will be reasonable accommodation if you have a valid and documented reason, and the documentation is provided in advance unless absolutely impossible. If you have a university approved (see the syllabus attachment) final conflict exam, you must tell me at least two weeks befre the final exam week, so so that we can figure out what to do.