This webpage used Mathjax script library to format mathematic formulae.
This webpage is the Mathjax support page to add Mathjax support to a web site.
A test of the above using W3School Try-It page was successful with:
<!DOCTYPE html>
<html>
<head>
<script defer src="https://cdn.jsdelivr.net/npm/mathjax@4/tex-svg.js"></script>
</head>
<body>
The content of the body element is displayed in your browser.
<p>However, for speeds near the speed of light, \(v^2/c^2\) is close to one, so \(\sqrt{1 - v^2/c^2}\) is very small and \(\Delta t\) becomes significantly larger than \(\Delta \tau\).</p>
</body>
</html>
The following is an attempt to include the script in this web page, and then format the sample html shown as plain text above...
However, for speeds near the speed of light, \(v^2/c^2\) is close to one, so \(\sqrt{1 - v^2/c^2}\) is very small and \(\Delta t\) becomes significantly larger than \(\Delta \tau\).