Advanced Formulae in Latex

Remember when you couln’t think of the correct commands to write a certain formula in latex because it’s been a year since you did it the last time? This might help you find the light. Vectors Using 1\newcommand{\ve}[1]{\mbox{\bf #1}} in your preamble, you can easily write vectors as follows: 123\begin{equation}     \mathscr{L}(\ve v_i) = [...]