<!DOCTYPE html> <html> <head> <title>Model doc</title> <script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"> </script> <script type="text/x-mathjax-config" > MathJax.Hub.Config({ tex2jax: { inlineMath: [['$','$'], ['\\(','\\)']], processEscapes: true } }); </script> </head> <body> \begin{equation} S(r)=S_{0,1}(1+\frac{r^2}{r_{c,1}^2})^{-3\beta_1+1/2}+S_{0,2}(1+\frac{r^2}{r_{c,2}^2})^{-3\beta_2+1/2}\notag \end{equation} </body> </html>