How to display inline LaTeX code inside a LaTeX document?

Question

Is it possible in LaTeX to display inlined LaTeX code? I would like to write a CheatSheet and show side by side Equations and the code inside a tabularx environment:

\documentclass{article}
\begin{document}
%This works
\begin{verbatim}
$x^y\cdot\frac{1}{2}$
\end{verbatim}
%This does not work
\VERB{$x^y\cdot\frac{1}{2}$}
\end{document}

Answer 1

you use wrong command name, instead of \VERB{...} should be \verb{...}. For selecting verbatim delimiter you should be careful, it should not be part of text in verbatim.

Your MWE, considering aforemntioned works fine:

\documentclass{article}
\begin{document}
This works 
\begin{verbatim}
$x^y\cdot\frac{1}{2}$
\end{verbatim}
And this also work if you use correct command name:
\verb+B{$x^y\cdot\frac{1}{2}$+
\end{document}

Answer 2

I normally use the package showexpl (which sits on top of listings):

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{showexpl}
\begin{document}
    This is a LaTeX example side by side
    \begin{LTXexample}[varwidth=true, basicstyle=\small\ttfamily]
        \[
            \int_a^b c\,dt
        \]
    \end{LTXexample}
    or below
    \begin{LTXexample}[pos=t, basicstyle=\small\ttfamily]
        \[
            \int_a^b c\,dt
        \]
    \end{LTXexample}
\end{document}

It's highly configurable via all the options available for listings.

Answer 3

If you don't need the complexity of using showexpl as in Rmano's answer, you can just use listings alone (although for demonstrating examples and code together it's fantastic). I usually combine it with fancyvrb which makes inline code simple to write also. Here's just one possible setup, which I use in documenting my own packages listings, but is highly configurable so you can choose a format that suits you.

\documentclass{article}
\usepackage{listings}
\usepackage{fancyvrb}
\DefineShortVerb{\|}
\lstset{%
    basicstyle=\ttfamily\small,
    commentstyle=\itshape\ttfamily\small,
    showspaces=false,
    showstringspaces=false,
    breaklines=true,
    breakautoindent=true,
    frame=single
    captionpos=t
    language=TeX
}
\begin{document}
It's useful to have a simple inline code markup like |\bfseries|.
For larger pieces of code use |{lstlisting}|:
\begin{lstlisting}
\documentclass{article}
\usepackage{listings}
\usepackage{fancyvrb}
\DefineShortVerb{|}
\lstset{%
    basicstyle=\ttfamily\small,
    commentstyle=\itshape\ttfamily\small,
    showspaces=false,
    showstringspaces=false,
    breaklines=true,
    breakautoindent=true,
    frame=single
    captionpos=t
    language=TeX
}
\end{lstlisting}
\end{document}