Homework Sourse4 1 8 3 1 1 8 1 72 9 13SolutionYour matrix Make the pivot in
4 -1 -8 3 1 -1 8 1 -7|2 9 13
Solution
Your matrix
Make the pivot in the 1st column by dividing the 1st row by 4
Eliminate the 1st column
Make the pivot in the 2nd column by dividing the 2nd row by 7/4
Eliminate the 2nd column
Make the pivot in the 3rd column by dividing the 3rd row by 3/7
Eliminate the 3rd column
Solution set:
x1 = -19
x2 = 50
x3 = -16
| X1 | X2 | X3 | b | |
|---|---|---|---|---|
| 1 | 4 | -1 | -8 | 2 |
| 2 | 3 | 1 | -1 | 9 |
| 3 | 8 | 1 | -7 | 10 |
