记号篇
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格式篇
- 多行等式
$$
\left\{
\begin{array}{ll}
x = x_0 + bt \\
y = y_0 - bt
\end{array}
\right.
$$
\[\left\{
\begin{array}{ll}
x = x_0 + bt \\
y = y_0 - bt
\end{array}
\right.
\]
标签:latex,begin,right,end,bt,实例,array
From: https://www.cnblogs.com/Zeardoe/p/16747197.html