1.在网页中插入代码

<script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=default"></script>

2.在mathtype》预置》剪切和复制预置选择mathML或Tex 》Latex2.9 or Later

\[\sqrt {{b^2} - 4ac} \frac{{{\rm{Opposite}}}}{{{\rm{Hypotenuse}}}}\left( {\frac{\pi }{2} - \theta } \right)\]