\documentclass[12pt]{article}
\usepackage{amssymb,amsmath,amscd,concmath,amsfonts}
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\begin{document}
\begin{equation*}
  \begin{bmatrix} z_1 \\ z_2 \end{bmatrix} = Tx =
  \begin{bmatrix} \alpha x_1 / \omega + x_2 \\ x_1 / \omega \end{bmatrix}.
\end{equation*}
\end{document}