Latex intro (3)

latex3.tex

\documentclass{article}
\newcommand\myEQ{x_0^5 + x_1 ^4}
\newcommand\voneBra{\left[\begin{array}{rr} 1 & 1 \end{array}\right]}			%[1 1]
%Begin Hadamard
\newcommand\Hadamard{\frac{1}{\sqrt{2}}
\left[
	\begin{array}{rr}
		1 & 1 \\
		1 & -1
	\end{array}
\right]}
%End Hadamard
\title{My First Document}
\author{Nick}
\date{today}
\begin{document}
	
	$\myEQ$
	\\-------\\
	\[ \myEQ\]
	\\-------\\
	\begin{equation} 
		\myEQ
	\end{equation}
	\\-------\\
	\begin{eqnarray*}
		\myEQ  &=& e^{i\pi} \\
						&=& -1
	\end{eqnarray*}
	\\-------\\
	$\Hadamard$
	\\-------\\
	$\voneBra$
\end{document}