SOLUTION: x1 − 2x2 + x3 = −1 2x1 + x2 − 2x3 = 2 x1 + 3x2 − 3x3 = 3 (x1, x2, x3) =

Algebra ->  Matrices-and-determiminant -> SOLUTION: x1 − 2x2 + x3 = −1 2x1 + x2 − 2x3 = 2 x1 + 3x2 − 3x3 = 3 (x1, x2, x3) =       Log On


   

Question 1108011: x1 − 2x2 + x3 = −1
2x1 + x2 − 2x3 = 2
x1 + 3x2 − 3x3 = 3
(x1, x2, x3) =

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
x1 − 2x2 + x3 = −1
2x1 + x2 − 2x3 = 2
x1 + 3x2 − 3x3 = 3
(x1, x2, x3) =
====================
|1  -2   1  -1|
|2   1  -2   2|
|1   3  -3   3|

Row 3 minus row 2 = row 1.
--> dependent, no unique solution.