let a be the square matrix of order 3*3.write the value of mod of 2A where mod of A = 4

Here A is a a square matrix of order 3, that is n = 3

|A| = 4

we know that, |kA| = kn |A|  ,  k is scalar and n is the order of the square matrix.

so, |2A| = 23 |A| = 8 × 4 = 32

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