Long time lurker, first time poster, but my time has come.
I highly suspect the answer to my question is easy, but I can't find how to solve my problem. I'm typesetting my Ph.D. thesis and I'm using a template built by some students of my University. The default fonts of this template were changed to resemble a document made in Microsoft Word, for reasons I really don't comprehend (the default LaTeX font is so beautiful!).
I managed to revert the text back from Times New Roman to the default Computer modern Roman with a command
\renewcommand*\rmdefault{cmr}
But I couldn't find how to revert the math font to the default. Currently, for example, my equations are like this:
While I want them to be like this:
In my document I renamed the \vec{} command to produce boldface text instead of putting the small arrow. The second figure was produced with an online LaTeX formula editor because I just wanted a figure with the default math font.
The differences on both fonts are noted mainly in the greek letter tau and the roman letter u.
A MWE is as follows, without the several included packages. None of them are related to fonts, except amsmath is almost a default. The font is defined somewhere on the class ufscThesis.cls, which I'm not comfortable editing. I suspect it is possible to, on the document, globally redefine the math font in the same way I redefined the text font to CMR without touching on the class file.
\begin{document}
\begin{equation}
\rho\Delta\vec{u}=\vec{F}\tau
\end{equation}
\end{document}
How do I do it?
\RequirePackage{mathptmx}
then simply comment out that line.times
option.