电脑 latex软件 方法/步骤 1 语句如下：\begin{align*}\begin{split}M_{1}= \left \{\begin{array}{ll} M_{ij}(0), & case 1\\ \sum^{N}_{j=1,j\neq i}M_{ij}, & case 2...
\begin{equation} \label{eq} \left\{ \begin{aligned} \pi & = 3.141\cdots \\ \sqrt{2} & =1.414\cdots \end{aligned} \right.\end{equation}