SOLUTION: I have to solve a 4X4 matrix w x y z 2 -2 -2 2 10 1 1 1 1 -5 3 1 -1 4 -2 1 3 -2 2 -6 Now I know I can flip row 2 and row 1 1 1 1 1 -5 2 -2 -2 2 10 3 1

Question 20162: I have to solve a 4X4 matrix
w x y z
2 -2 -2 2 10
1 1 1 1 -5
3 1 -1 4 -2
1 3 -2 2 -6
Now I know I can flip row 2 and row 1
1 1 1 1 -5
2 -2 -2 2 10
3 1 -1 4 -2
1 3 -2 2 -6
Now I can slove the second row by mutiplying row1 one by -2 and adding row2 etc.
1 1 1 1 -5
0 -4 -4 0 20
0 -2 -7 1 13
0 2 -3 1 -1
Now I am stuck where do I go from here????

Answer by vidyamanohar(13) (Show Source): You can put this solution on YOUR website!
I will continue from where you left the problem....
1 1 1 1 -5
0 -4 -4 0 20
0 -2 -7 1 13
0 2 -3 1 -1
flip row 3 and row 2
1 1 1 1 -5
0 -2 -7 1 13
0 -4 -4 0 20
0 2 -3 1 -1
no multiply row 2 with 2 and subtract it from row 3
and simultaneously add row 2 to row 4
1 1 1 1 -5
0 -2 -7 1 13
0 0 10 -2 -6
0 0 -10 2 12
now add row 3 to row 4
1 1 1 1 -5
0 -2 -7 1 13
0 0 10 -2 -6
0 0 0 0 6
since the first 4 elements is fourth row are zeros and the last element is non zero, the system doesnot possess solution.
the system is inconsistent
RELATED QUESTIONS
The question asks: Solve each system of equations using matrices (row operations).... (answered by stanbon)

Gauss Jordan...Please Help A system of three linear equations in the variables x,y and (answered by fractalier)

use the matrix approach to solve the system x+y-z= -3 2x+y+z= 4 5x-y+2z=23 I know (answered by venugopalramana)

How do I use elementary row operations to write each matrix in row echelon form? 2 -1 (answered by )

2 1 1 5 4 1 2 1 1 3 3 _ I am suppose to find the missing number in the second... (answered by jim_thompson5910)

Solve this equation using matrices. 2x-3y+z=5 x+3y+8z=22 3x-y+2z=12 I have already... (answered by rwm)

I have a problem getting the answers to these: Render... (answered by venugopalramana)

x+3=0 x+y+z=1 3x-y-z=11 We must use the Gauss-Jordan elimination. I have already... (answered by hayek)

Help! I don't know if I'm doing this right. Use the matrix method. x+y-z = -9... (answered by stanbon)