Hi, I am very new to Stata so I apologise for the amateur-ness of my question. How do I calculate price elasticity using time series data that has not been logged? Can I use mfx and eyex? (and what are they?)

What is the better way to interpret own price elasticity? - by simply logging all my variables and interpreting the coefficients as the elasticities or this mfx/eyex command? my variables include quantity of physical textbooks as my dependent variable and price of physical textbooks, income, price of online books, and test scores as the independent variables.

Many thanks.

Han