Homework 7, due November 6, 2008.

[goodwine]

Collaborative Problem: Write a computer program that does the forward phase of Gauss-Jordan elimination for a system of 4 equations and 4 unknowns. Test it on the example problem from class. It may be useful to print the matrix at each step for debugging purposes. It is allowable to use the fact that the system has 4 equations; however, next week's program will be for a system of n equations and n unknowns, so the more general you can formulate it, the easier next week's homework will be.

Individual Problem: Extend the program to do the backward phase and find the answer.

[mmcdonn3]

Michael McDonnell
Fortran Homework 7

[mbohnert]

Do you want the output as an x vector,an augmented matrix, or as x1 = b1 etc?

[goodwine]

Do you want the output as an x vector,an augmented matrix, or as x1 = b1 etc?

Any form is o.k. Since you asked, a vector would be best since that is what the answer actually is.

[eguilbea]

I have a lot of the numerical locations of array elements hard-coded into my program (for example: A(2,J), rather than A(N,J)). I also have a separate do loop to find each 1 or 0 element in the reduction. I remember you told me that next week, we'd have to apply the problem to more general situations, but is what I did acceptable for this week's assignment?
Thanks!
Eddie

[goodwine]

I have a lot of the numerical locations of array elements hard-coded into my program (for example: A(2,J), rather than A(N,J)). I also have a separate do loop to find each 1 or 0 element in the reduction. I remember you told me that next week, we'd have to apply the problem to more general situations, but is what I did acceptable for this week's assignment?
Thanks!
Eddie

What you did is perfectly acceptable for this week.

[msobole1]

HW7