1) A= 2 -1 -1
1 0 1
-1 4 0
Determine the inverse of matrix by using Adjoint method
2) Utilized the gauss-Jordan method to solve linear system:
x -y-z =1
2x-3y +z = 10
x +y -2z = 0
3) Utilize Gaussian elimination method to get the equivalent system in triangularform given:
2x +y + z -6 =0
-3x -4y +2z -4 =0
x +y -z +2 +0