QUESTION 1:
Solve the system of equations by the Gaussian elimination method.
x - y +z = 17
x + y -z = -11
x - y - z = 9
QUESTION 2:
When solving the following system of equations by the Guassian elimination method
X - 3y - 2z = -5
2x - y + 3z = 15
4x - 4y + 9z = 49
Question 3:
Which of the following is NOT a matrix leading to the solution?
1) 1 -3 -2 -5
0 5 7 25
4 -4 9 49
2) 1 -3 -2 -5
0 5 7 25
0 8 17 69
3) 1 -3 -2 -5
0 5 7 25
0 0 10 44
Question 4:
My response: Please explain if I am wrong. I have several more to do.
3) 1 -3 -2 -5
0 5 7 25
0 0 10 44