How to use Latex on Blogspot.

 <script src='http://cdn.mathjax.org/mathjax/latest/MathJax.js' type='text/javascript'>  
 MathJax.Hub.Config({  
  extensions: ["tex2jax.js","TeX/AMSmath.js","TeX/AMSsymbols.js"],  
  jax: ["input/TeX", "output/HTML-CSS"],  
  tex2jax: {  
    inlineMath: [ ['$','$'], ["\\(","\\)"] ],  
    displayMath: [ ['$$','$$'], ["\\[","\\]"] ],  
  },  
  "HTML-CSS": { availableFonts: ["TeX"] }  
 });  
 </script>