When using multline
for parsing an equation, there's a larger vertical space above the equation than below. Why is this? It looks off. Example:
\documentclass{article}
\usepackage{amsmath}
\usepackage{lipsum}
\begin{document}
\lipsum[2]
\begin{multline}
{I_{xx,\,\mathrm{frus}}} = {I_{xx,\,\mathrm{hemi}}} - {I_{xx,\,\mathrm{cap}}} \\ - \left({V_{\mathrm{cap}}} m_{\mathrm{frus}} {V_{\mathrm{frus}}}^{-1}\right) {\left( {{{\bar z}_{\mathrm{cap}}} - {{\bar z}_{\mathrm{hemi}}}} \right)^2} - m_{\mathrm{frus}} {\left( {{{\bar z}_{\mathrm{frus}}} - {{\bar z}_{\mathrm{hemi}}}} \right)^2}
\end{multline}
\lipsum[3]
\end{document}
Output: