for a square matrix A of order 3 if |2 adj A| =128 then find |A| - Maths - Matrices

Question

for a square matrix A of order 3 if |2 adj A| =128 then find |A|

Rishabh Mittal · Accepted Answer

Dear Student,

2 adj A=12823  adj A=128                Since kA=kn A8  adj A=128adj A =16A2=16                         Since adj A=An-1A=4   ANS

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for a square matrix A of order 3 if |2 adj.A| =128 then find |A|