Question

Resolva a equação Matricial
 [1 1 1] [x] [0]
 [2 1 3] [y]=[1]
 [1 -1 4] [z] [1]

Answer 1

[1 1 1| 0]
[2 1 3| 1]
[1 -1 4| 1]
L2=L2-2*L1
L3=L3-L1
[1 1 1| 0]
[0 -1 1| 1]
[0 -2 3| 1]
L3=L3-2*L2

[1 1 1| 0]
[0 -1 1| 1]
[0 0 1| -1]

z = -1
-y+z = 1
-y-1=1
-y=2
y = -2
x+y+z=0
x-2-1=0
x=3

x=3, y = -2, z = -1