\subsectionIntroduction to Analytic Geometry
A function $f(x)$ is increasing on an interval if $f'(x) > 0$ for all $x$ in the interval.
\sectionConic Sections
\subsectionIncreasing and Decreasing Functions
\sectionIntegrals
\subsectionIntroduction to Conic Sections
\documentclassarticle \usepackage[margin=1in]geometry \usepackageamsmath \usepackageamsfonts \usepackageamssymb
\subsectionArea Between Curves