【Latex】Latex里的各种数

前言

之前在$latex$里写组合数这类东西的时候都是用得竖排数组
比如\left( \begin{array}{l}a\\b\end{array} \right)
但众所周知,这样是不优雅的
今天查了查,果然有解决方案

解决方案

我们可以看下面两篇文章

[1]http://www.combinatorics.net/weblib/commands/command.html
[2]http://jingyan.baidu.com/article/915fc414f5dbe351384b2043.html

不过遗憾的是,我们需要加载amsmath这个宏包
也就是说$MathJax$不支持 (╯‵□′)╯︵┻━┻

—————————— UPD 2017.4.1 ——————————
似乎组合数还是支持的

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