Function Composition and Limits

This lecture covers the composition of functions and the concept of limits, including the composition of two functions, properties of real functions, and the definition of composite functions. It also discusses the limit of a function, the definition of a function at a neighborhood, and the limit of a function as it approaches a specific value. The lecture further explores the concept of bijective functions and the existence of reciprocal functions. Additionally, it delves into the definition of limits using sequences and the characterization of the limit of a function based on sequences.