Page Widget How to - Mark math complex function

Question

We would like to know how to mark math complex function.

Answer


<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
span {<!-- w ww .j a v a 2  s . c  o m-->
  font-style: italic;
  padding-left: 10px;
  padding-right: 10px;
}

span.top {
  border-bottom: 1px solid #000;
}
</style>
</head>
<body>
  <span class="top">2x+1</span>
  <br>
  <span>3x-9</span>
</body>
</html>

The code above is rendered as follows: