Click the video for instructions: https://youtu.be/HzjY0suOnGI

Latex needs to be between a  "\("   and  "\)".  For example below of f'' (f prime prime), the latex in the tiltle would be

What does \(f ^{\prime\prime}\) tell me?

The Latex will not show in the eBook, you can only see it in the C3PO editor.

This is how it looks in the eBook: