Preámbulo De Documentos LaTeX En Mac
\documentclass[12pt,a4paper]{article} \usepackage[spanish]{babel} \usepackage[T1]{fontenc} \usepackage[utf8]{inputenc} \usepackage{amsmath} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{makeidx} \usepackage{graphicx}