1.

Consider a matrix A=[a_(ij)[_(3xx3) where, a_(ij)={{:(i+2j,ij="even"),(2i-3j,ij="odd"):}. If b_(ij) is the cafactor of a_(ij) in matrix A and C_(ij)=Sigma_(r=1)^(3)a_(ir)b_(jr), then [C_(ij)]_(3xx3) is

Answer»

`[(1,0,0),(0,1,0),(0,0,1)]`
`[(-1,5,-7),(4,6,8),(3,9,-3)]`
`[(88,0,0),(0,88,0),(0,0,88)]`
`[(2,3,1),(1,6,2),(-1,5,2)]`

ANSWER :C


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