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Functions
Abstract
This chapter deals more with functions. First, we introduce a Cartesian product and its properties, then define the concept of a relation which is a subset of the Cartesian product of two sets. By defining the concept of function, we introduce dependent and independent variables and domain and range of a function that a function can accept. After introducing two specific types of functions, we are going to be familiar with several functions and their properties throughout this chapter. We also define the inverse of a function, and then we introduce and draw figures of most of them to have more ideas about such functions.
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