I want to have the right side of the equation surrounded by square brackets with appropriate size.
How do I make the brackets contain many lines without ruining the alignment?
Minimal code that won't compile:
\documentclass[
paper=a4,
oneside,
fontsize=13pt,
headsepline=.5pt,
numbers=noenddot,
parskip=half,
captions=tableheading,
DIV=12,
toc=bibliography,
final
]{scrartcl}
\usepackage{amsmath, amsfonts}
\begin{document}
\begin{equation}
\begin{aligned}
\vec{\nabla} = \left[ &\frac{\partial}{\partial x_1} \\
&\frac{\partial}{\partial x_2} \\
&\frac{\partial}{\partial x_3} \right]
\end{aligned}
\end{equation}
\end{document}
This gives following errors:
! Extra }, or forgotten \right.
<template> }
$\endtemplate
l.17 \vec{\nabla} \left[ &
\frac{\partial}{\partial x_1} \\
?
! Missing \right. inserted.
<inserted text>
\right .
l.17 \vec{\nabla} \left[ &
\frac{\partial}{\partial x_1} \\
?
! Missing } inserted.
<inserted text>
}
l.17 \vec{\nabla} \left[ &
\frac{\partial}{\partial x_1} \\
?
! Missing } inserted.
<inserted text>
}
l.19 ... &\frac{\partial}{\partial x_3} \right
]
?
! Extra \right.
l.19 ... &\frac{\partial}{\partial x_3} \right]
?
! Missing { inserted.
<inserted text>
{
l.20 \end{aligned}
?