How to add mathematical formula's in a rich text box?

To be able to enter mathematical formula's in some text boxes of Matrix Requirements application, you need to insert a draw.io diagram within a rich text box. 

In the draw.io diagram tool, you need to select the "Mathematical Typesetting" to enable the mathematical syntax recognition :

The following syntax can be used: AsciiMath, LaTeX or Inline LaTeX, see more information on draw.io support: https://desk.draw.io/support/solutions/articles/16000032875

Below, an example of an AsciiMath and LaTeX formula's: