在没有可编译的最小示例的情况下,我假设您正在使用
amsmath
包裹
\documentclass[a4paper,12pt]{article}
\pagestyle{empty}
\usepackage{amsmath}
\begin{document}
\begin{multline} u \frac{\partial v}{\partial x} + v \frac{\partial v}{\partial y} = -\frac{1}{\rho} \frac{\partial P}{\partial x}+\frac{\mu}{\rho} \frac{m}{2} \left[ \frac{1}{2}\left( \frac{\partial u}{\partial y}\right)^2\right]^{\left(\frac{m}{2}-1\right)} \left(\left(\frac{\partial u}{\partial y}\right)^2 \frac{\partial ^2u}{\partial y^2}\right) \end{multline}
\end{document}
我用过
^{...}
将指数与剩余项分离:
^{\left(\frac{m}{2}-1\right)}
希望这能帮助。。。