I'm setting up a little math study site and am trying to create an online practice problem system to go with it. Since most of the solutions that will be submitted are going to be pretty complex calculus equations, I need a good wysiwyg that the user can navigate efficiently and create some sort of text output that can be processed and compared with the answer on the server.
Right now I'm working with the codecogs equation editor for fckeditor which works, more or less, but it's really unhandy for users, and when the user inputs something I have to pull apart the image code that it creates with a crazy regex operation to tell if it's the right answer or not.
Anyone know of anything better? I can deal with handling the unhandy return code I guess, but I really need something that's easier for the user to navigate.