1. 8.6 log equations.notebook February 06, 2013
8.6 Applications of Logarithms
x x
2 = 8 2 = 5
1

2. 8.6 log equations.notebook February 06, 2013
1. 32x = 5
2

3. 8.6 log equations.notebook February 06, 2013
3x ­ 1 = 19
2. 10
3

4. 8.6 log equations.notebook February 06, 2013
3. log (4x ­ 3) = log (x + 6)
7 7
4

5. 8.6 log equations.notebook February 06, 2013
Change to exponential form.
Solve log2 (3x + 1) = 4
5

6. 8.6 log equations.notebook February 06, 2013
Solve log 10x + log (x ­ 3) = 2. Check for extraneous solutions.
6