1.

LetA=[[1,-1,1],[2,1,-3],[1,1,1]] Using A^-1 solve the system of equations x-y+z=4 2x+y-3z=0 x+y+z=2

Answer»

Solution :[[1,-1,1],[2,1,-3],[1,1,1]][(x),(y),(z)]=[(4),(0),(2)]
AX =B
`|A|=10!=0`
`X+A^(-1)B`
`A^(-1)=1/10 [[4,2,2],[-5,0,5],[1,-2,3]]`
`X=A^(-1)B`
x=2,y=-1,z=1


Discussion

No Comment Found

Related InterviewSolutions