Quote of the Day: 
     "I hear and I forget. 
      I see and I remember. 
      I do and I understand." -- Chinese Proverb.

Objectives:
	The student will be able to graph step functions
         	(for example, the greatest integer function).
	The student will be able to form the inverse function of 
		a given function.
	The student will be able to graph piece-wise defined functions.
	
1. Collect Homework Assignment.

2. Types of Functions
   	(1) Piece-wise Defined Functions 
		(functions defined over different domains)
    	    Examples:
		(a) Cost of purchasing Graphing calculators
    		      	if n < 10,  	cost is $68.75 each
			if 10 <= n <20	cost is $68.00 each
			if 20 <= n <30	cost is $67.50 each
	
		(b) Figuring Shipping on an internet order
    		      	for orders  < $20.00,   add $2.00
			for orders between $20 and $100,  add .10*cost of order
			for orders > $100, add $12.00

		(c) Definition of Absolute Value 

   	(2) Step Functions 
    	      Examples:
		(a) Greatest Integer Function    

		     Graph of the Greatest Integer Function    

                                  (b) Click here for Postage Rates (Step function)
                                  (c) Click here for Tax Table (Step function)
                                  (d) Click here for Church Giving (Step function)

   	(3) Even / Odd Functions 
                  f(x) is even if  f(-x) = f(x) for all x.
                  f(x) is odd if  f(-x) = -f(x) for all x.

                  Examples:

3.  Other Functions (which will be discussed later)
      	I. Algebraic Functions
	  A. Explicit Functions
	     1. Polynomial Functions
		a. Constant
		b. Linear
		c. Quadratic
		d. Cubic
	     2. Rational Functions
	  B. Implicit Functions
                  e.g.,      xy = 3
	II. Transcendental Functions
	  A. Trig Functions
	  B. Logarithmic Functions
	  C. Exponential Functions

4. Inverse Functions
	Definition:  

5. Miscellaneous Graphs

6. Comic Strip on Multiplicative Inverse

                 

7. Assignment: 
      p. 58 (47a, 61, 69a,b,c,d, 78a,b,c,d) 
      p. 234 (13, 14, 16) 
      p. 103 (2)             
      Work on Mini Exam Review Sheet