This is an example of a display of an equation. I have incorporated MathJax hooks and hope this works ok. For starters I will just display a single equation. This is the continuity equation for the density \( \rho \) with velocity field \( \mathbf{ v} \):

\[ \partial_{t} \rho + \nabla \cdot \left( \rho \mathbf{v} \right) = 0 \]

And the familiar quadratic equation:

When \( a \ne 0 \), there are two solutions to \(ax^2 + bx + c = 0\) and they are

\[ x = {-b \pm \sqrt{b^2 -4ac} \over 2a}.  \]

Not bad.