Use MathJax and LATEX in openelearning 

awesome thanks :) this is what I need

sample : \( J_\alpha(x) = \sum\limits_{m=0}^\infty \frac{(-1)^m}{m! \, \Gamma(m + \alpha + 1)}{\left({\frac{x}{2}} ight)}^{2 m + \alpha} \)