# Homework Help: Gaussian elimination

1. Oct 13, 2009

### Newbatmath

1. The problem statement, all variables and given/known data

Hey everyone! I was handed this question in class without being taught how to do it! The text is supposed to be helpful but it is just confusing.

Using Gaussian elimination and 3-digit rounding arithmetic, solve the following linear system:

3.3330x_1 +15920x_2 +10.333x_3 = 7953
2.2220x_1 +16.710x_2 +9.6120x_3 = 0.965
-1.5611x_1 +5.1792x_2 -1.6855x_3 = 2.714

I'm then supposed to compare it to the actual solutions of x_1 = 1, x_2 = 0.5 and x_3 = -1 but I believe I know how to do that. :)

If there is anyway you can let me know how to do the above problem I'd really appreciate it! I want to learn this and the textbook is not clear at all.

2. Oct 13, 2009

### whs

3. Oct 13, 2009

### whs

Note that the above link takes it a step further with Gauss-Jordan elimination.

Just simply quit when you have reached the requirements for regular Gaussian elimination.