Lesson #45 Graphs of Logarithmic and Exponential Functions


Quote of the Day: 
"If we couldn't laugh, we would all go insane;
 If we weren't all crazy, we would go insane."
   -- Jimmy Buffett

Objectives:
The student will graph exponential functions.
The student will graph logarithmic functions.
The student will solve exponential equations.

1. Go over homework and collect it.

2. Show comics -- Foxtrot
          Fox Trot Cartoon

          Fox Trot Cartoon
3. Show that y = ln(x) and y = e^x are inverse functions of 
   each other.

4. Graph y = e^x and y = ln(x) on the same axes. Show 
   symmetry.

5. Examples of log problems:
         
6. Click here for Reggae Song about the Log of the Quortient
7. Log jokes

   (A) Lumberjacks make good musicians because of their 
       natural logarithms.

   (B) The answer to the problem was "log(1+x)". A student
       copied the answer from the good student next to him, 
       but didn't want to make it obvious that he was 
       cheating, so he changed the answer slightly, to 
       "timber(1+x)."

8. Assignment:    
          p. 74 (28, 34, 38, 51)   

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