if A is a square matrix of order 3 such that adj(2A) = k adj(A) , then wite the value of k..

If A is a square matrix.. then adj(kA) = k^{n-1}(adjA) where n is order of the matrix..

here , n= 3 & k = 2

hence , adj(2A) = 2^{3-1}(adjA) = 4(adjA)

so , k=4....

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