在 MathJax 中显示长除法符号 )‾‾‾‾‾‾的方法

问题描述

有没有办法在 MathJax 中格式化长除法，所以它看起来像这样:

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?

推荐答案

这是对 Werner 答案的修改，可以让您得到您想要的.它使用 MathJax 的 enclose 扩展来插入处理长除法符号的 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.

$$

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

结果是

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