src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML" type="text/javascript">
    MathJax.Hub.Config({
     TeX: { equationNumbers: { autoNumber: "AMS" } },
     tex2jax: {
      inlineMath: [ ['$','$'], ["\\(","\\)"] ],
      displayMath: [ ['$$','$$'], ["\\[","\\]"] ],
      processEscapes: true },
     'HTML-CSS': { scale: 90 },
     displayIndent: '2em'
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