On Wednesday,  9 May 2018 at 17:16, Joseph Vidal-Rosset wrote:
> Thanks Eric and Tom.
>
> At the moment, I do not know what is the most convenient solution.
>
> this one:
>
> #+BEGIN_LaTeX latex
>
> #+END_LaTeX

What version of org are you using?  This is probably not what you want
if you are using version > 8.

In any case, I use both LaTeX snippets, especially maths inline, but
also export LaTeX blocks for more complex material, mostly long
equations and tikz pictures.

-- 
Eric S Fraga via Emacs 27.0.50, Org release_9.1.6-591-gee336b