SOLUTION: solve using gauss elimination method: X1 + 2 X2 + X3 = 0 2X1 + 2 X2 + 3 X3 = 3 -X1 - 3 X1 = 2

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Question 1118868: solve using gauss elimination method:
X1 + 2 X2 + X3 = 0
2X1 + 2 X2 + 3 X3 = 3
-X1 - 3 X1 = 2
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!

1  2  1  0
2  2  3  3
W H A T ?

Fix your last row equation. or is it ?

RESPONSE:

(This is unfinished...)
1    2    1    0
2    2    3    3
-1   -1   0    2


E3=E1+E3

1   2   1   0
2   2   3   3
0  -1   1   2


E2=E2-2E1

1   2   1   0
0  -2   1   3
0  -1   1   2


1   2    1    0
0  -2   1    3
0   1   -1   -2


E3=E2+2E3

1   2   1   0
0   -2  1   3
0   0   -1  1


1   2   1   0
0  -2   0   4
0   0   -1  1


1   2   1   0
0   1   0  -2
0   0   1  -1


E1=E1-E3

1   2   0   1
0   1   0   -2
0   0   1   -1



 E1=E1-2E2

1   0   0   5
0   1   0   -2
0   0   1  -1


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