1. 10.1/10.2 Logarithms and Functions
Algebra II - Chapter 10
10.1/10.2 Logarithms and Functions

6. In general, the inverse of y= bx is x = by, y is called the logarithm of x.
It is usually written as y = logbx and is read
y equals log base b of x

7. Solving Exponential Equations:
If b x = b y then x = y
For example:

8. Another Example: 32n+1 = 81 *are they the same base?
*how can you make them the same base?

11. Logarithmic to Exponential Form:
Write each equation in exponential form:
Log 3 81 = 4

12. You Try:
Log5125 = 3

13. Exponential to Logarithmic Form:
Write each equation in logarithmic form:
54 = 625

14. You Try:
83 = 512

15. Evaluate Logarithmic Expressions:
Evaluate each expression:
log 4 256

16. You Try:
Log 2 16

17. Quiz Next Class – Composite Functions
Tonight’s Homework:
Page 528 (45-47)(52,53,56)
Page 536 (21-43 odd)
Quiz Next Class – Composite Functions