0 votes 0 votes If $\mathrm{A}=\left(\begin{array}{cccc}1 & 0 & 0 & 1 \\ 0 & -1 & 0 & -1 \\ 0 & 0 & i & i \\ 0 & 0 & 0 & -i\end{array}\right)$ the matrix $\mathrm{A}^{4}$, calculated by the use of Cayley - Hamilton theorem or otherwise, is Others gate1993-ec + – admin asked Sep 16, 2022 edited Dec 1, 2023 by makhdoom ghaya admin 46.4k points 113 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.