Jupyter notebook Latex cannot get widebar to work

In Jupyter Notebook, how can I get a bar (representing variable mean) to span the full string in braces?

Python 3.7, if that matters

$\bar{T_V(C)}$ returns a tiny bar:

$\widebar{T_V(C)}$ doesn't seem to work:

1 Answer

You can use \overline.

$\overline{T_V(C)}$