Numerical method - elimination

[bombers]

Not sure where to post it so I did it in this subforum.

http://i53.tinypic.com/33dup2p.png <------image of the problem.

 

[mmm4444bot]

Have you learned about row operations ? What did they present in class ? Do you know what an upper triangular matrix is ?

I mean, where should I start to help you ?

You need to provide some statements about what you've already done.

Cheers ~ Mark



PS: Please read the post titled, "Read Before Posting."

 

[bombers]

This is what i got. =\

switching 1st & last
1 1 -3
2 4 -1
4 1 2

1 1 -3 kept row1
0 2 5 row2 - 2times row1
0 -3 11 row3 - 4times row1

1 1 -3
0 1 -16 (row2 + row3)times -1
0 -3 11 kept it

1 1 -3
0 1 -16
0 0 -37 row3 + 3times row2

 

[bombers]

I believe we have to use the gaussian elimination method.

 

[Deleted member 4993]

You got your upper triangular matrix ... nothing more is needed.