Sakai can display LaTeX equations as mathematical notation in the rich text editor. Using LaTeX options, instructors and students can simply write LaTeX in an enabled tool and the resulting equation will be displayed beautifully.
Select the Site Info tool in the tool menu of your site.
Click on the Manage Tools tab.
Below the Selected Tools list, check the box to Enable MathJax for automatic rendering of LaTex and AsciiMath in this site.
Insert "$$" before and after mathematical equation to set it apart from the rest of the text. Math equations are editable in the edit screen of the tool, but will display as equation in preview and student view.