Let $A \in \mathbb{C}^{2 \times 2}$ be a D6159: Complex square matrix such that
| (i) | \begin{equation} A = \begin{bmatrix} 1 & 2 \\ 2 & 4 \end{bmatrix} \end{equation} |
| (ii) | \begin{equation} \Lambda = \begin{bmatrix} 2 & 0 \\ 0 & 1 \end{bmatrix} \end{equation} |
Then
\begin{equation}
A \Lambda
=
\begin{bmatrix}
2 & 2 \\
4 & 4
\end{bmatrix}
\end{equation}