1. Common Logs & Natural Logs
Chapter 10, Sections 4 and 5

2. Common Logs

3. About Common Logs
Common logs can be done on the calculator with the log button
Common logs can make solving exponential equations easier

4. Change of Base Formula Used to simplify logs when the base is NOT 10
examples

5. Natural Logs

6. About Natural Logs
Natural logs can be done on the calculator with the ln button
Natural logs can make solving exponential equations easier

7. Homework–
Page 53 in workbook, 4-7, 23-28
Page 54 in workbook, 1-20
Exit slip – Explain the difference in the common log and the natural log.