If $A=\left[\begin{array}{lll}a & 0 & 1 \ 0 & a & 1 \ 0 & 0 & a\end{array} ight]$, then the value

Question

If $A=\left[\begin{array}{lll}a & 0 & 1 \ 0 & a & 1 \ 0 & 0 & a\end{array}ight]$, then the value of $|\operatorname{Adj} A|$ is

Professor PC Thomas Classes · Answer

$|	ext{Adj } A| = |A|^{n-1}$.