1.

Let A=[a_(ij)] and B=[b_(ij)] be two 4xx4 real matrices such that b_(ij)=(-2)^((i+j-2))a_(ji) where i,j=1,2,3,4. IfA is scalar matrix of determinant value of1/128 then determinant of B is

Answer»

64
`1/64`
32
none of these

Solution :GIVEN `RARR"det"B=2^(12)a^(4)=2^(12)xx1/128=32`


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