이 - 우수한 라이브러리

첫째, 내가 무엇을 보여 주려하고있어,이

<!DOCTYPE html> 
<html lang="en"> 
<head> 
    <meta charset="UTF-8"> 
    <title>Mixed Markup</title> 

    <script type="text/x-mathjax-config"> 
     MathJax.Hub.Config({ 
      MathML: { 
       extensions: ["content-mathml.js"] 
      } 
     }); 
    </script> 

    <script type="text/javascript" async 
     src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX- AMS-MML_HTMLorMML"> 
    </script> 

</head> 
<body> 

<math xmlns="http://www.w3.org/1998/Math/MathML"> 
    <apply><csymbol cd="relation1">eq</csymbol> 
     <apply><csymbol cd="fns1">domain</csymbol> 
      <apply><csymbol cd="fns1">restriction</csymbol><ci>f</ci><ci>S</ci></apply> 
     </apply> 
     <ci>S</ci> 
    </apply> 
</math> 

</body>

두 번째, 표현은