How to align in smallmatrix?

Question

I want to right-align everything, but it does not seem to work inline:

\documentclass[12pt]{article}

\usepackage{a4wide, fancyhdr}
\usepackage[ngerman]{babel}
\usepackage[T1]{fontenc}    
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage{epstopdf}
\usepackage{mathtools}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{url}
\usepackage[parfill]{parskip}
\usepackage{enumerate}
\usepackage{framed}
\usepackage{xcolor}

\begin{document}

Matrix $A=\left(\begin{smallmatrix}[rr] 2 & -2\\ -1 & 4 \\ 0 & 6\end{smallmatrix}\right)$ 
or this $\vec{a}=\left(\begin{smallmatrix}[r] x \\ -3 \\ 5\end{smallmatrix}\right)$ ...text...

\end{document}

Any thoughts? This does not help...

Are you even using mathtools, if you are you are not asking it to be right aligned. As mentioned, provide a full minimal exmaple not just a sniplet — daleif, Oct 18 '18 at 11:27
The answer you refer to mentions mathtools explictly, you are not using it.... simple as that — daleif, Oct 18 '18 at 11:28

daleif · Accepted Answer · 2021-11-03T08:25:31.523

6

You are referring to the right answer, just use it correctly

\documentclass[12pt]{article}
\usepackage{mathtools}
\begin{document}
Matrix $A=\begin{psmallmatrix}[r] 2 & -2\ -1 & 4 \ 0 & 6\end{psmallmatrix}$ 
or this $\vec{a}=\begin{psmallmatrix}[r] x \ -3 \ 5\end{psmallmatrix}$
\end{document}

edited Nov 03 '21 at 08:25

answered Oct 18 '18 at 11:31

daleif

54,450

Can I ignore package a4wide? – Christoph Oct 18 '18 at 11:43
@Christoph yes, learn to use the geometry package to set proper margins (or what ever the interface of the class you are using offers, article has none, though do remember the a4paper class option, the default is US letter) – daleif Oct 18 '18 at 12:35

score 1 · Answer 2 · edited Sep 21 '19 at 17:51

1

Using \hfill is a much easier solution, for example:

\left\{ \begin{smallmatrix} 
x^3+y^3+z^3 \hfill & = & 1 \\ 
x^2+y^2+z^2 \hfill & = & 0 \\ 
x^3+x^2+y+z \hfill & = & -1 
\end{smallmatrix} \right.

edited Sep 21 '19 at 17:51

Cragfelt

4,005

answered Sep 21 '19 at 16:07

Just Someone

11

What do you mean? Where should I use \hfill? – Christoph Sep 21 '19 at 16:10
1

Example:\left{\begin{smallmatrix} x^3+y^3+z^3\hfill&=&1\ x^2+y^2+z^2\hfill&=&0\ x^3+x^2+y+z\hfill&=&-1 \end{smallmatrix}\right. Of course I needed it to display equations – Just Someone Sep 21 '19 at 16:11
5

Please add that example directly into the answer, comments are easily missed. Fleshing out the example to a full MWE (https://tex.meta.stackexchange.com/q/228/35864) and adding a picture of the output are a nice touch (though by no means a must). I would say that in its current form without further explanation about where the \hfill ought to go, the answer needs some work. – moewe Sep 21 '19 at 16:57

How to align in smallmatrix?

2 Answers2