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边界内的缩放方程

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边界内的缩放方程

我把一个方程分成几行但却无法完美地保持在边距内。

在此处输入图片描述

输入是

\begin{equation*}
\begin{split}
    & \ddot\phi_3+\phi_3+sin(\tau+\alpha)[p_1\Delta \alpha+2 \nabla p_1 \nabla \alpha] \\
    & \qquad -\cos(\tau+ \alpha)[\Delta p_1 -p_1 (\nabla \alpha)^2+\frac{5}{6}g_2^2p_1^3- \frac{3}{4}g_3p_1^3-p_1 +\omega_2 p_1]
    +\frac{ p_1^3}{12}(2g_2^2+3g_3)\cos3(\tau + \alpha) \\
    & \qquad +g_2 p_1 [p_2+ p_2 cos2(\tau +\alpha)+q_2 \sin2(\tau+\alpha)] =0
\end{split}
\end{equation*}
\begin{equation}\label{eq10}
\begin{split}
& \ddot\phi_3+\phi_3+\sin(\tau+\alpha)[p_1\Delta \alpha+2 \nabla p_1 \nabla \alpha] \\
& \qquad  -\cos(\tau+ \alpha)[\Delta p_1-p_1 (\nabla \alpha)^2 + \lambda p_1^3-p_1+\omega_2 p_1] +\frac{p_1^3}{12}(2g_2^2+3g_3)\cos3(\tau + \alpha) \\
 & \qquad +g_2 p_1 [p_2+ p_2 \cos2(\tau +\alpha)+q_2 \sin2(\tau+\alpha)]=0
\end{split}
\end{equation}

答案1

这个可以吗？

\documentclass{article}
\usepackage{amsmath}

\begin{document}

\begin{align}
&\begin{aligned}
    \ddot\phi_3&+\phi_3+\sin(\tau+\alpha)[p_1\Delta \alpha+2 \nabla p_1 \nabla \alpha] \\
    & -\cos(\tau+ \alpha)\left[\Delta p_1 -p_1 (\nabla \alpha)^2+\frac{5}{6}g_2^2p_1^3- \frac{3}{4}g_3p_1^3-p_1 +\omega_2 p_1\right] \\
    & +\frac{ p_1^3}{12}(2g_2^2+3g_3)\cos3(\tau + \alpha) \\
    & +g_2 p_1 [p_2+ p_2 \cos2(\tau +\alpha)+q_2 \sin2(\tau+\alpha)] =0
\end{aligned}\nonumber\\[15pt]
&\begin{aligned}\label{eq10}
    \ddot\phi_3&+\phi_3+\sin(\tau+\alpha)[p_1\Delta \alpha+2 \nabla p_1 \nabla \alpha] \\
    & -\cos(\tau+ \alpha)[\Delta p_1-p_1 (\nabla \alpha)^2 + \lambda p_1^3-p_1+\omega_2 p_1] \\
    & +\frac{p_1^3}{12}(2g_2^2+3g_3)\cos3(\tau + \alpha) \\
    & +g_2 p_1 [p_2+ p_2 \cos2(\tau +\alpha)+q_2 \sin2(\tau+\alpha)]=0
\end{aligned}
\end{align}

\end{document}

在此处输入图片描述

equationPS 由于这两个方程是连续的，因此这种方法可能比和的方法看起来更好split。

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