Quote of the Day: 
"We only think when confronted with a problem." 
    -- John Dewey

Objectives:
The student will take derivatives of logarithms to any base. 
     
1. Bell Ringer.  

2. Develop the derivative formula for ln(x).

   (A) Recall the definitions of e: 
            
 
   (B) Prove:  
       
        

       
         
 
3. Now use this fact to develop the derivative formula 
     for the log of x to any base a:
 
            
 
4. Examples
            

5. Assignment: 
   p. 247 (1, 3, 7, 9, 10, 11, 13, 15,  19, 21, 23, 39)

Click here to go to the next page