Go to http://www.math.umd.edu/grades/MATH246.0401.html. For some reason the letter grades to not appear, so I posted them separately: http://www.math.umd.edu/~sullivan/246grades.html

The cutoffs I used were:

- A: 100-80
- B: 70-79
- C: 60-69
- D: 49-59

Animation of example done on Oct 7.

Table 3.6.1 for finding y_{p}.

Animation of critical damping.

Laplace Transform example. (Based on an example I will do in class Oct 23 or 25.

Understanding Parametric Spirals. To help with section 7.6.

Phase Portrait for Section 9.3 example.

PDF file This explains why you get cycles in the predator-prey problems.