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I can't understand how to add parentheses/brackets to these two formals, I've tried '/right)' and '\left(' but without success. Please help, how should I edit this code to get the attached pictures (I've pointed out brackets that I need to add)? I can't change the code so much. I need to save all the 'mathord' and 'vphantom' and change the code minimally.

    \left( {{{\alpha_{{\dot{h}}} s + \alpha_{h} } 
\mathord{\left/ {\vphantom {{\alpha_{{\dot{h}}} s + \alpha_{h} } 
{s^{2} + \alpha_{{\dot{h}}} s + \alpha_{h} }}} \right. \kern-0pt} 
{s^{2} + \alpha_{{\dot{h}}} s + \alpha_{h} }}} \right).

and

    \mathop {\lim }\limits_{s \to 0} s\left( {{{s^{2} } 
\mathord{\left/ {\vphantom {{s^{2} } 
{s^{2} + \alpha_{{\dot{h}}} s + \alpha_{h} }}} \right. \kern-0pt} 
{s^{2} + \alpha_{{\dot{h}}} s + \alpha_{h} }}} \right)h_{i}^{c} = 0

enter image description here enter image description here

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  • What about something like \documentclass{article} \begin{document} \[ (\alpha_{\dot{h}} s + \alpha_{h}) / (s^{2} + \alpha_{\dot{h}} s + \alpha_{h}) \] \[ \lim_{s \to 0} s(s^{2}) / (s^{2} + \alpha_{\dot{h}} s + \alpha_{h} ) h_{i}^{c} = 0 \] \end{document}?
    – leandriis
    Jun 13, 2020 at 12:57
  • I should save all these 'mathord' and 'vphantom' because this is Proofreading. I can't change the code too much.
    – Tag
    Jun 13, 2020 at 12:59
  • What is \vphantom supposed to do here?
    – leandriis
    Jun 13, 2020 at 13:25
  • To be honest, I have no idea, this was sent to me for Proofreading
    – Tag
    Jun 13, 2020 at 13:26
  • Where did you learn \mathop{\lim}? Tell the person that suggested it, along with \mathord, that you're no longer friends.
    – egreg
    Jun 13, 2020 at 15:04

1 Answer 1

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Like this?

\documentclass{article}
\usepackage{amsmath}

\begin{document}
\[
  \bigl( \alpha_{\dot{h}} s + \alpha_{h} \bigr) /
  \bigl( s^{2} + \alpha_{\dot{h}} s + \alpha_{h} \bigr).
\]
\[
  \lim_{s \to 0} s
  \bigl( s^{2} \bigr) /
  \bigl( s^{2} + \alpha_{\dot{h}} s + \alpha_{h} \bigr)
  h_{i}^{c} = 0
\]
\end{document}

enter image description here

EDIT

Just insert \big( and \big)

\documentclass{article}

\begin{document}
\[
    \left( {{{\alpha_{{\dot{h}}} s + \alpha_{h} } \big)
\mathord{\left/ {\vphantom {{\alpha_{{\dot{h}}} s + \alpha_{h} }
{s^{2} + \alpha_{{\dot{h}}} s + \alpha_{h} }}} \right. \kern-0pt} 
{\big( s^{2} + \alpha_{{\dot{h}}} s + \alpha_{h} }}} \right).
\]
\[
    \mathop {\lim }\limits_{s \to 0} s\left( {{{s^{2} \big) } 
\mathord{\left/ {\vphantom {{s^{2} } 
{s^{2} + \alpha_{{\dot{h}}} s + \alpha_{h} }}} \right. \kern-0pt} 
{\big( s^{2} + \alpha_{{\dot{h}}} s + \alpha_{h} }}} \right)h_{i}^{c} = 0
\]
\end{document}
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  • Yes, but I can't change the code so much. I need to save all the 'mathord' and 'vphantom' and change the code minimally.
    – Tag
    Jun 13, 2020 at 13:25
  • I don't think these changes will cause extra unexpected effects beyond these two formulas
    – ZhiyuanLck
    Jun 13, 2020 at 13:32
  • I can't change because this code is in Proofreading system
    – Tag
    Jun 13, 2020 at 13:47
  • Then what can be changed and what can not? Please make it more clearly.
    – ZhiyuanLck
    Jun 13, 2020 at 13:52
  • If that possible, could we save the code as it is and just add '/right)' and '\left('? I just don't understand where they should be placed. I tried some variants but it didn't work.
    – Tag
    Jun 13, 2020 at 13:55

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