\documentclass[12pt]{article}
\pagestyle{empty}
\begin{document}
\begin{displaymath}
E[j] =
{
{
\int_{\bf r}
j \times { \exp[-\beta U({\bf r}) ] }
d{\bf r}
}
\over
{
\int_{\bf r}
{ \exp[-\beta U({\bf r}) ] }
d{\bf r}
}
}
\end{displaymath}
\end{document}
distrib
>
Fedora
>
14
>
x86_64
>
media
>
updates
>
by-pkgid
>
2f8321c8e2a11ea8b160a642cfc9fd7f
>
files
>
128
