1.

Let A={aij} be a 3×3 matrix, where aij=⎧⎪⎨⎪⎩(−1)j−iif i<j,2if i=j,(−1)i+jif i>j,then det(3 Adj(2A−1)) is equal to

Answer» Let A={aij} be a 3×3 matrix, where aij=(1)jiif i<j,2if i=j,(1)i+jif i>j,

then det(3 Adj(2A1)) is equal to


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