Q8 If A=
1 2 -3 2 3 2 3 -3 -4
,find A-1. Using A-1, solve the system of linear equations:
x+ 2y-3z = - 4, 2x + 3y + 2z = 2, 3x - 3y-4z = 11.
Solution
,
1 | 2 | -3 |
2 | 3 | 2 |
3 | -3 | -4 |