Ononot — Given the block matrix M = \begin{pmatrix} A & 0 \\ 0 & B \e

Matriceshard

0:00.0

Given the block matrix $M = \begin{pmatrix} A & 0 \\ 0 & B \end{pmatrix}$ , where $A$ and $B$ are $n \times n$ matrices, which of the following expressions for $M^k$ (for $k \in \mathbb{Z}^+$ ) are correct?