I have a strange problem. I am trying to render the following valid latex,
$$\int_{x=0}^{x=h} u_t dx = \int_{x=0}^{x=h} (-au + du_x)_x dx +
\int_{x=0}^{x=h} s(x,t,u) dx$$
in a markdown cell in an ipython notebook (version 0.13.2 built from source). If I instead render each term separately it works!
$$\int_{x=0}^{x=h} u_t dx $$
$$\int_{x=0}^{x=h} (-au + du_x)_x dx$$
$$+ \int_{x=0}^{x=h} s(x,t,u) dx$$
Is it possible to get an error message to find out where the problem is? iPython is rendering this via MathJax.