<!DOCTYPE html> <html> <head> <title>Example of defining a macro that autoloads an extension</title> <!– Copyright © 2012-2018 The MathJax Consortium –> <meta http-equiv=“Content-Type” content=“text/html; charset=UTF-8” /> <meta http-equiv=“X-UA-Compatible” content=“IE=edge” /> <meta name=“viewport” content=“width=device-width, initial-scale=1”>

<!–

|
|  This page shows how to define macros in your configuration, or as part 
|  of the body of the page itself.
|  
|-->

<script type=“text/x-mathjax-config”> MathJax.Hub.Config({

TeX: {
  Macros: {
    RR: '{\\bf R}',                // a simple string replacement
    bold: ['\\boldsymbol{#1}',1]   // this macro has one parameter
  }
}

}); </script> <script type=“text/javascript” src=“../MathJax.js?config=TeX-AMS_HTML-full”></script>

</head> <body>

<!–

|
|  Here we use a math block that contains nothing but definitions in 
|  standard TeX format.  It is enclosed in a DIV that doesn't display, so 
|  that there are no extra spaces generated by having the extra 
|  mathematics in the text.
|  
|  The first macro makes it easy to display vectors using \<x,y,z>
|  the second uses \newcommand to create a macro
|
|-->

<div style=“display:none”> (

\def\<#1>{\left<#1\right>}
\newcommand{\CC}{\mathbf{C}}

) </div>

<p> This page uses two different methods to define macros: either putting them in JavaScript notation in the MathJax configuration, or in TeX notation in the body of the document. </p>

<p>Some math that used the definitions: [

f\colon\RR\to\RR^3 \hbox{ by } f(t)=\< t+1,{1\over 1+t^2}, \sqrt{t^2+1} >

] and [

\{\,z\in\CC \mid z^2 = \bold{\alpha}\,\}

] </body> </html>