`empheq`를 사용하여 행렬과 축소행 사다리꼴 행렬을 나란히 조판

Question

empheq나는 이 두 행렬을 동일한 환경에서 쉼표로 구분하고 로 할당된 공간을 사용하여 나란히 배치하려고 합니다 \qquad \quad.

\documentclass[10pt]{amsart}

\usepackage{nccmath}
\usepackage{empheq}
\usepackage{amssymb}

\begin{document}

\begin{empheq}[left = \empheqlbrack, right =\empheqrbrack]{equation*}
\renewcommand{\arraystretch}{1.75}
\begin{array}{@{\,}ccc|l@{\,}}
1 & 0 & -1 & a \\
0 & 1 & -1 & a + b \\
0 & 0 & \phantom{-}1 & -\mfrac{1}{2} \, a - \mfrac{1}{2} \, b + \mfrac{1}{2} \, c
\end{array}
\end{empheq}

\begin{empheq}[left = \empheqlbrack, right =\empheqrbrack]{equation*}
\renewcommand{\arraystretch}{1.75}
\begin{array}{@{\,}ccc|l@{\,}}
1   &   0   &   0   &   \mfrac{1}{2} \, a - \mfrac{1}{2} \, b + \mfrac{1}{2} \, c \\
0   &   1   &   0   &   \mfrac{1}{2} \, a + \mfrac{1}{2} \, b + \mfrac{1}{2} \, c \\
0   &   0   &   1   &   -\phantom{-}\mfrac{1}{2} \, a - \mfrac{1}{2} \, b + \mfrac{1}{2} \, c
\end{array}
\end{empheq}

\end{document}

Answer 1

다음을 사용하여 empheq:

\documentclass[10pt]{amsart}

\usepackage{nccmath}
\usepackage{empheq}
\usepackage{amssymb}

\begin{document}
\begingroup
\centering
    \begin{minipage}{0.45\linewidth}
\begin{empheq}[left = \empheqlbrack, right =\empheqrbrack]{equation*}
\renewcommand{\arraystretch}{1.75}
\begin{array}{@{\,}ccc|l@{\,}}
1 & 0 & -1 & a \\
0 & 1 & -1 & a + b \\
0 & 0 & \phantom{-}1 & -\mfrac{1}{2} \, a - \mfrac{1}{2} \, b + \mfrac{1}{2} \, c
\end{array}
\end{empheq}
    \end{minipage}
\quad,\quad
    \begin{minipage}{0.45\linewidth}
\begin{empheq}[left = \empheqlbrack, right =\empheqrbrack]{equation*}
\renewcommand{\arraystretch}{1.75}
\begin{array}{@{\,}ccc|l@{\,}}
1   &   0   &   0   &   \mfrac{1}{2} \, a - \mfrac{1}{2} \, b + \mfrac{1}{2} \, c \\
0   &   1   &   0   &   \mfrac{1}{2} \, a + \mfrac{1}{2} \, b + \mfrac{1}{2} \, c \\
0   &   0   &   1   &   -\phantom{-}\mfrac{1}{2} \, a - \mfrac{1}{2} \, b + \mfrac{1}{2} \, c
\end{array}
\end{empheq}
    \end{minipage}
\endgroup
\end{document}

empheq솔루션을 사용하지 않는 것이 더 간단합니다.

\documentclass[10pt]{amsart}

\usepackage{nccmath}
\usepackage{empheq}
\usepackage{amssymb}

\begin{document}
\[
\renewcommand{\arraystretch}{1.75}
\left[\begin{array}{@{\,}ccr|l@{\,}}
1 & 0 & -1 & a \\
0 & 1 & -1 & a + b \\
0 & 0 & -1 & -\mfrac{1}{2} \, a - \mfrac{1}{2} \, b + \mfrac{1}{2} \, c
\end{array}\right]
\quad,\quad
\left[\begin{array}{@{\,}ccc|l@{\,}}
1   &   0   &   0   &   \mfrac{1}{2} \, a - \mfrac{1}{2} \, b + \mfrac{1}{2} \, c \\
0   &   1   &   0   &   \mfrac{1}{2} \, a + \mfrac{1}{2} \, b + \mfrac{1}{2} \, c \\
0   &   0   &   1   &   -\phantom{-}\mfrac{1}{2} \, a - \mfrac{1}{2} \, b + \mfrac{1}{2} \, c
\end{array}\right]
\]
\end{document}