Funzioni reali di variabile reale

In this video, we introduce the concept of real functions of a real variable. We explore the interpretation of graphs with regard to properties such as injectivity and surjectivity. We explain how to use a table of values ​​to determine some points on the graph of a function, and finally, we begin to determine the domain of some integer and rational algebraic functions. 0:00:00 - Definition and first examples 0:06:08 - Interpreting graphs 0:12:31 - How to determine the natural domain The graphs are created with Geogebra