2

How can I make a vector in this form?

enter image description here

  • 1
    This question is answered here. – audiophiel Jul 9 '16 at 21:17
4

You can do that in two ways: either with the mathtools package (needless to load amsmath) or with the blkarray package. Math tools defines rcases and drcases environments (the latter is the displaystyle version of the former):

\documentclass{article}
\usepackage{mathtools}
\usepackage{blkarray}

\begin{document}

\[ \begin{rcases} -1 \\ \hphantom{-} \vdots \\ -1 \end{rcases}m \qquad
 \begin{blockarray}[t]{c \Right{\}}{\,$ m $}}-1 \\ \hphantom{-} \vdots \\ -1 \end{blockarray} \]

\end{document} 

enter image description here

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