9 lines
219 B
TeX

\documentclass[preview]{standalone}
\usepackage[english]{babel}
\usepackage{amsmath}
\usepackage{amssymb}
\begin{document}
\begin{align*}
\mathbf{A} \begin{bmatrix} 3 & 0\\ 0 & 2\end{bmatrix}
\end{align*}
\end{document}