\begin{equation} \forall a \in N \end{equation}
$\sum\limits_{i=1}^nX_i$
[mathjax] \begin{equation} \sum\limits_{i=1}^nX_i$ \end{equation}
不支持$ 标记hhhh
(:з」∠)
You must be logged in to post a comment.
$\sum\limits_{i=1}^nX_i$
[mathjax]
\begin{equation}
\sum\limits_{i=1}^nX_i$
\end{equation}
不支持$ 标记hhhh
(:з」∠)