1.

Let A be a 3xx3 matrix such that A [(1,2,3),(0,2,3),(0,1,1)]=[(0,0,0),(1,0,0),(0,1,0)], then A^(-1) is :

Answer»

`[(3,1,2),(3,0,2),(1,0,1)]`
`[(3,2,1),(3,2,0),(1,1,0)]`
`[(0,1,3),(0,2,3),(2,1,1)]`
`[(1,2,3),(0,1,1),(0,2,3)]`

SOLUTION :`AB=2 " UNITS. "PA +PB LE4`


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