Code: Select all
\documentclass[11pt,letterpaper,twoside]{book}
\usepackage[T1]{fontenc}
\usepackage[nomath]{lmodern}
\usepackage[total={6in,10in},left=1.5in,top=0.5in,includehead,includefoot,showframe]{geometry}
\usepackage[nodisplayskipstretch]{setspace}
\setstretch{1.1}
\raggedbottom
\usepackage{microtype}
\usepackage{amsmath}
\usepackage{showframe}
\begin{document}
\setlength{\abovedisplayskip}{2ex}
\setlength{\abovedisplayshortskip}{0pt}
\setlength{\belowdisplayskip}{\abovedisplayskip}
\setlength{\belowdisplayshortskip}{\belowdisplayskip}
\setlength{\jot}{3ex}
This is just a test, to see what will happen next and the equation below this dummy text sample:
\begin{align}
y^2 + x^2 - z^2 = 1
\end{align}
\end{document}