PLEASE, How does one access a screen ON THIS SITE which allows for one to do touchscreen, stepwise calculations, and to use applicable mathematical symbols?

Question

espex · Answer

If you are referring to the Latex, you either enter it in as tex commands inline $$\frac{a}{b}=\frac{c}{d}$$ and they have a practice forum: http://openstudy.com/study?login#/groups/LaTeX%20Practicing!%20%3A%29 or you use the "Equation" button in the response to a question. Anything other than that, I don't know what you mean.