# [LON-CAPA-users] latex/tex in authoring

**Lars Jensen
**
lon-capa-users@mail.lon-capa.org

*Fri, 09 Dec 2005 08:44:36 -0800*

Hi Nathan,
Nathan Schoenack wrote:
>* Hello,
*>*
*>* I want to display an equation--u=x/y--in a format where the x is
*>* actually over the y. I thought I could use tex or latex with a <tex>
*>* </tex> kind of format based on what I read in the Problem Editing Help
*>* link in the edit mode. The problem is I don't know tex or latex so I
*>* don't know if I'm screwing up the tags or the tex code itself (I got
*>* some help from our tex-using profs).
*>*
*>* 1st question: Is it Tex or LaTex (or both) that LON-CAPA uses?
*
It is latex
>* 2nd: How do you enable it?
*
use the m-tag, and enclose the latex in 4-signs (or double-$-signs for
display).
>*
*>* Here's what I'm trying:
*>* <tex >$\frac{x y}$</tex >
*
use <m>$u=\frac{x}{y}$</m>
or <m display="jsmath">$u=\frac{x}{y}$</m>
<m>$$u=\frac{x}{y}$$</m>
or <m display="jsmath">$$u=\frac{x}{y}$$</m>
Lars.