mat262

MAT 261: Differential Equations

* After yesterday's final update, two grades were incorrect. (The project counted for 20% and the final did not count under option III. So, these two students have newly revised final grades. For everyone else, the grades are the same as yesterday.)

The average final exam score was a healthy72%. I decided to add 3% to everyone's final exam so that it came out to an even 75%.

These are the grades that will be submitted on the course
grade roster. Although I cannot return your final exam or project to you, you are welcome to
stop by and take a look and discuss it. If you have any questions, please submit them by e-mail.
I hope you all have a great summer. Take Care!!!

Direction Field Links:

http://math.rice.edu/~dfield/dfpp.html	http://www.scottsarra.org/applets/dirField1/dirField1.html
http://www.math.psu.edu/melvin/phase/newphase.html	http://alamos.math.arizona.edu/ODEApplet/JOdeApplet.html
http://www.ms.washington.edu/matweb/webdf/webdf1.html

MATLAB files for numerical simulation of ODEs

LAPLACE TRANSFORM ITEMS:

NEW: Example started in class on Thursday 04/06/06 but was not finished due to lack of time (shifting a function to apply the Heaviside Shift Theorem.)

Maple Code for Finding Laplace Transforms...

with(inttrans); laplace(t^2,t,s);

Interesting Link on DEs and Laplace Transforms

Spring-Mass Simulation Program for MATLAB

Directions:     1. Copy the entire program into a clipboard.
2. Open up MATLAB program
                3. From the file menu, select NEW m-file.
     4. Paste the program into the file.
                   5. Save as spring.m (file type: all files *.*)
                                         6. Inside the MATLAB program, type spring, and hit enter.
    7. Experiment with the program.

Putzer Algorithm (case of duplicate eigenvalues and not enough eigenvectors)

Variation of Parameters and Calculating Inverses of Fundamental Matrices

Last Updated 05/09/06