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\begin{equation}\tag{A}
\left
.\begin{array}{ll}
\xi{} = -x, & y(x) = y(-\xi{}) = y_{0}(\xi) \\
y^{'}(x) = -y^{'}_{0}(\xi{}), & y^{''}(x) = -y^{''}_{0}(\xi{})
\end{array}
\right.
\end{equation}
答案1
这是你要找的吗:
\begin{equation}\tag{A}
\left
.\begin{array}{ll}
\xi{} = -x, & y(x) = y(-\xi{}) = y_{0}(\xi) \\
y'(x) = -y'_{0}(\xi{}), & y''(x) = -y''_{0}(\xi{})
\end{array}
\right.
\end{equation}
答案2
我已经多次看到错误的输入
y^{'} y^{''}
应该是
y' y''
^{\prime}
当单个撇号出现时,内部翻译为 ,当两个撇号出现时,翻译为^{\prime\prime}
。
您的代码也有无用的\left.
命令\right.
。
我建议使用aligned
该显示器。您可以根据自己的喜好将两个块对齐在=
或左侧。
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{equation}\tag{A}
\begin{aligned}
\xi &= -x, & y(x) &= y(-\xi) = y_{0}(\xi) \\
y'(x) &= -y'_{0}(\xi), & y''(x) &= -y''_{0}(\xi)
\end{aligned}
\end{equation}
\begin{equation}\tag{B}
\begin{aligned}
& \xi = -x, && y(x) = y(-\xi) = y_{0}(\xi) \\
& y'(x) = -y'_{0}(\xi), && y''(x) = -y''_{0}(\xi)
\end{aligned}
\end{equation}
\end{document}