Question 83993: can someone help me please......
use the gauss-jordan method to solve each system of equations.
x + 3y -6z = 7
2x -y +2z = 0
x + y +2z = -1
Found 2 solutions by stanbon, richwmiller:
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Here is a site that will lead you thru an example
step-by-step.
http://aspire.cs.uah.edu/textbook/gauss.html
-----------
Cheers,
Stan H.
Answer by richwmiller(17219)  (Show Source):
You can put this solution on YOUR website! add down (-2/1) *row 1 to row 2
1,0,-6,7
0,-1,14,-14
1,0,2,-1
add down (-1/1) *row 1 to row 3
1,0,-6,7
0,-1,14,-14
0,0,8,-8
divide row 2 by -1/1
1,0,-6,7
0,1,-14,14
0,0,8,-8
add down (0/1) *row 2 to row 3
1,0,-6,7
0,1,-14,14
0,0,8,-8
divide row 3 by 8/1
1,0,-6,7
0,1,-14,14
0,0,1,-1
add up (14/1) *row 3 to row 2
1,0,-6,7
0,1,0,0
0,0,1,-1
add up (6/1) *row 3 to row 1
1,0,0,1
0,1,0,0
0,0,1,-1
add up (0/1) *row 2 to row 1
1,0,0,1
0,1,0,0
0,0,1,-1
final
1,0,0,1
0,1,0,0
0,0,1,-1
|
|
|
