For any 2 - rowed square matrix A, if A(adjA) = \(\begin{pmatrix}8&0 – InterviewSolution

1.

For any 2 - rowed square matrix A, if A(adjA) = \(\begin{pmatrix}8&0 \\0 &8\end{pmatrix}\)then the value of │A│ isA. 0 B.8 C.64 D.4

Answer»

(adjA) = \( \begin{pmatrix} 8&0 \\ 0 &8 \end{pmatrix}\)

= 8 \( \begin{pmatrix} 1&0 \\ 0 &1 \end{pmatrix}\)

= │A│I

│A│= 8.

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