New guy here, I am just trying to study LaTeX from the very beginning. I am using TexShop on a Mac, and now I am reading George Grätzer's Short Course.
Here's my question, when I type Binomial coefficients or Matrices in TexShop, I get an error. What's my problem?
This is my code
\documentclass[11pt, oneside]{article}
\usepackage{geometry}
\geometry{letterpaper}
%\geometry{landscape}
%\usepackage[parfill]{parskip}
\usepackage{graphicx}
%convert eps --> pdf in pdflatex
\usepackage{amssymb}
\title{Brief Article}
\author{The Author}
%\date{}
\begin{document}
\maketitle
%\section{}
%\subsection{}
\[
\binom{ \frac{n^{2} - 1}{2} }{n + 1}
\]
\[
\begin{matrix}
a + b + c & uv & x - y & 27\\
a + b & u + v & z & 134
\end{matrix}
\]
\end{document}
%
character in that line where you state 'convert eps --> ' etc. That is a comment line