在MathJax中显示长除法符号)‾‾‾‾‾‾的方式

问题描述

在MathJax中是否可以格式化长除法，所以看起来像这样:

Is there a way to format long division in MathJax so it looks like this:

     125     (Explanations)
   4)500
     4        (4 ×  1 = 4)
     10       (5 -  4 = 1)
      8       (4 ×  2 = 8)
      20      (10 -  8 = 2)
      20      (4 ×  5 = 20)
       0      (20 - 20 = 0)

但显然格式正确吗?

推荐答案

这是对Werner答案的修改，可以使您得到想要的东西.它使用MathJax的封闭扩展名插入用于处理长分隔符号的MathML <menclose>元素.

Here is a modification of Werner's answer that gets you what you want. It uses MathJax's enclose extension to insert a MathML <menclose> element that handles the long-division symbol.

$$
\require{enclose}
\begin{array}{rll}
    125 && \hbox{(Explanations)} \\[-3pt]
   4 \enclose{longdiv}{500}\kern-.2ex \\[-3pt]
      \underline{4\phantom{00}} && \hbox{($4 \times 1 = 4$)} \\[-3pt]
      10\phantom{0} && \hbox{($5 - 4 = 1$)} \\[-3pt]
      \underline{\phantom{0}8\phantom{0}} && \hbox{($4 \times 2 = 8$)} \\[-3pt]
      \phantom{0}20 && \hbox{($10 - 8 = 2$)} \\[-3pt]
      \underline{\phantom{0}20} && \hbox{($4 \times 5 = 20$)} \\[-3pt]
      \phantom{00}0
  \end{array}
$$

结果是

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