Multiply the Diagonal Matrices A and B

[latex] \[ \textbf{Multiply the Diagonal Matrices A and B, where:} \] \[ A = \begin{pmatrix} 3 & 0 \\ 0 & 5 \end{pmatrix}, \quad B = \begin{pmatrix} 2 & 0 \\ 0 & 4 \end{pmatrix} \] \[ \textbf{Solution:} \] \[ A \times B = \begin{pmatrix} 3 & 0 \\ 0 & 5 \end{pmatrix} \times \begin{pmatrix} 2 & 0 \\ 0 & 4 \end{pmatrix} \] \[ = \begin{pmatrix} (3 \cdot 2 + 0 \cdot 0) & (3 \cdot 0 + 0 \cdot 4) \\ (0 \cdot 2 + 5 \cdot 0) & (0 \cdot 0 + 5 \cdot 4) \end{pmatrix} \] \[ = \begin{pmatrix} 6 & 0 \\ 0 & 20 \end{pmatrix} \]
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