Cheg 258 - Lecture Notes - Jan. 31, 2000
Announcements
- The Matlab tutorial will be held today (and all following mondays) in
room 140, Debartolo from 6:00 - 7:30PM.
Class notes
Scanned Notes
The main points of the lecture were
Goals:
After this class you should be able to:
- Factor a matrix into the product of upper triangular, lower triangular, and pivoting matrices.
- Use PLU decomposition to solve systems of equations.
Reading
- The class notes, Ch. 2 of Hanna, and Ch. 3 of Kahaner.
- Print out the matlab documentation of the '\' command from the online
reference documentation. You can find this under the cheg258 home page.
Click on matlab help, then on 'ops' under the categories of functions, and
then on '\'
Questions of the Day
- Does pivoting change the physical problem being solved by Gaussian Elimination?
- What criteria would you use to reorder equations in pivoting?
- We have looked at row pivoting. Is there another way to overcome the same problem? What does it physically correspond to?
Matlab Example Codes
example 6
-
Homework Exercises (Due Feb. 7, 2000)
problem 6
solution
David.T.Leighton.1@nd.edu