Question
Solve this system that is represented by the following matrix.
[1 -2 -2| -3
0 5 3| 13
0 0 1| 1]
Write answer in (x, y, z)
[1 -2 -2| -3
0 5 3| 13
0 0 1| 1]
Write answer in (x, y, z)
Answers
Reiny
Your result is already in the final stage before you can just start stating the answer.
from the last line, z = 1
in the 2nd line 5y+3z = 13
plug in z = 1, then find y
now you have y and z
so plug those into the 1st line and you are done
from the last line, z = 1
in the 2nd line 5y+3z = 13
plug in z = 1, then find y
now you have y and z
so plug those into the 1st line and you are done