LaTeX systeme without auto-rearrange

Question

How can I cancel the auto-rearrange function of \systeme? I wrote the following line and got the result I did not want. I want the equation generated to be the exact order as I wrote, in which t is the last element.

$$\systeme*{2x-y+2z+t=-2,x+y-5t=5}
\leftrightarrow
\begin{bmatrix}
    2&-1&2&1&-2\\
    1&1&-5&0&5
\end{bmatrix}$$

[

score 4 · Accepted Answer · edited Apr 13 '17 at 12:34

4

You can choose the order of variables manually, see section 1.3 of the manual. Also see Why is \[ … \] preferable to $$?.

\documentclass{article}
\usepackage{amsmath,systeme}
\begin{document}

\begin{equation*}
  \systeme*[xyzt]{2x-y+2z+t=-2,x+y-5t=5}
  \leftrightarrow
  \begin{bmatrix}
    2&-1&2&1&-2\\
    1&1&-5&0&5
  \end{bmatrix}
\end{equation*}

\end{document}

edited Apr 13 '17 at 12:34

Community

1

answered Mar 31 '17 at 00:43

Henri Menke

109,596

Thank you very much, though I wouldn't have asked this question had I understand what the manual says. – Mia Mar 31 '17 at 01:41

score 0 · Answer 2 · answered Mar 31 '17 at 00:42

As an alternative, one could use TABstacks.

\documentclass{article}
\usepackage{tabstackengine,amsmath}
\TABstackMath
\begin{document}
\[
\TABbinary
\Matrixstack[r]{2x&-y&+2z&+&t=&{-}2\\x&+y&&-&5t=&5}
\leftrightarrow
\setstacktabbedgap{1em}
\TABunaryLeft
\bracketMatrixstack[r]{
    2&-1&2&1&-2\\
    1&1&-5&0&5
}
\]
\end{document}

LaTeX systeme without auto-rearrange

2 Answers2