Latex intro (2)

latex2.tex

\documentclass{article}
\usepackage{amsmath}

\title{My First Document}
\author{Nick}
\date{\today}
\begin{document}

	$x_0^5 + x_1 ^4$
	\\ ------- \\
	\[ x_0^{5x^e} + x_{1+3x} ^4 \]
	\\ ------- \\
	\begin{equation} 
		x_0^5 + x_1 ^4     \label{eq:MyFirstEquation}
	\end{equation}
	\\ ------- \\
	\begin{eqnarray*}
		x_0^5 + x_1 ^4  &=& e^{i\pi} \\
						&=& \frac{1}{2} + \sqrt{\frac{1}{2}}
	\end{eqnarray*}
	
	\begin{eqnarray*}
	  f(n) = \left\{ 
	  \begin{array}{l l}
	    n/2 & \quad \text{if $n$ is even}\\
	    -(n+1)/2 & \quad \text{if $n$ is odd}\\
	  \end{array} 
		\right. %NOTICE this "closes" your curly brace!	
	\end{eqnarray*}


	And then, later on in the text, we can use \eqref{eq:MyFirstEquation} to reference that equation!
\end{document}