1. 8.5 Exponential and Logarithmic Equations
The best and safest thing is to keep a balance in your life, acknowledge the great powers around us and in us.

2. We will use logarithms to undo exponents.
We will use this property of logarithms:

3. Exponential Equations
Take the common logarithm of both sides

4. Exponential Equations
By graphing…
1. Graph:
2. Find point of intersection (2nd -> Calc -> Intersect)
calc

5. Logarithmic Equations
Change of Base Formula:
Ex: Evaluate

6. Logarithmic Equations
When x is in the argument of the logarithm and nothing can be moved around…convert equation to an exponential function.

7. Logarithmic Equations
When there are multiple logarithms… Write as a single logarithm, THEN put in exponential form!

8. 8.5 Exponential and Logarithmic Equations
HW: 1-13 odd, odd
The best and safest thing is to keep a balance in your life, acknowledge the great powers around us and in us.