Question

resolución de la matriz 3 x 3 de gauss jordán

x + y - 2z = 9
2x - y + 4z = 4
2x - y + 6z = -1

Answer 1

X+y-2z=9
2x-y+4z=4
2x-y+6z=-1

1 1 -2 9 1 1 -2 9. 1 1 -2 9
2 -1 4 4 = (-2)R1+R2 = 0-3 8 -14 = R3/-3= 0 1 -8/3 14/3=
2 -1 6 -1 (-2)R1+R3 0-3 10 -19 0 -3 10 -1


1 0 2/3 13/3 1 0 2/3 13/3
= (3)R2+R3 = 0 1 -8/3 14/3= R3/2 = 0 1 -8/3 14/3
(-1)R2+R1 0 0 2 13 0 0 1 13/2


1. 0. 0. 0.
=(8/3)R3+R2 = 0. 1. 0. 22
(-2/3)R3+R1 0. 0. 1. 13/2
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X=0. I
Y=22. I
Z=13/2. I
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