# MathJax: Test Post

Checking MathJax functionality without CMS

$$\gamma{n} = \frac{ \left | \left (\mathbf x_{n} - \mathbf x_{n-1} \right )^T \left [\nabla F (\mathbf x_{n}) - \nabla F (\mathbf x_{n-1}) \right ] \right |} {\left |\nabla F(\mathbf{x}_{n}) - \nabla F(\mathbf{x}_{n-1}) \right |^2}$$