SECTION 1.1  An Introduction to Functions 
                                                  
       Chapter 1  
       A Review of Functions 
        
                                                  
        
       Section 1.1:  An Introduction to Functions 
        
              Definition of a Function and Evaluating a Function 
              Domain and Range of a Function 
        
                                                  
        
       Definition of a Function and Evaluating a Function  
        
       Definition:  
        
                                                
                    
                                               
       MATH 1330  Precalculus                       1 
       CHAPTER 1  A Review of Functions 
        
                                         
       Defining a Function by an Equation in the Variables x and 
       y:  
        
                                            
        
       Example:  
                                   
       Solution:  
                                          
       The Function Notation:  
        
                                           
       2                   University of Houston Department of Mathematics 
                            SECTION 1.1  An Introduction to Functions 
                                           
       Evaluating a Function:  
        
                                          
                                           
        
       Example:  
                                       
       Solution:  
                      
        
        
       MATH 1330  Precalculus                 3 
       CHAPTER 1  A Review of Functions 
        
                      
                    
        
       Example:  
                           
       Solution:  
                   
        
        
        
       4                   University of Houston Department of Mathematics