If A= \begin{bmatrix} 8 & 2\\ 3 & 2 \end{bmatrix},  then find \left | adj\, A \right |\cdot

 

 

 

 
 
 
 
 

Answers (1)

Here A= \begin{bmatrix} 8 & 2\\ 3&2 \end{bmatrix}\; \; \; \left | A \right |=\begin{bmatrix} 8 & 2\\ 3&2 \end{bmatrix} = 16-6= 10
          \therefore \left | adj\, A \right |= \left | A \right |^{2-1}= 10   

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