8.4   Properties of Logarithms

8.4 Properties of Logarithms PowerPoint PPT Presentation


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Properties of Logarithms. There are four basic properties of logarithms that we will be working with. For every case, the base of the logarithm can not be equal to 1 and the values must all be positive (no negatives in logs). . Product Rule. . logbMN = LogbM logbN. Ex: logbxy = logbx logby E

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8.4 Properties of Logarithms

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1. 8.4 – Properties of Logarithms

2. Properties of Logarithms There are four basic properties of logarithms that we will be working with. For every case, the base of the logarithm can not be equal to 1 and the values must all be positive (no negatives in logs)

3. Product Rule

4. Quotient Rule Ex: Ex: Ex:

5. Power Rule Ex: Ex: Ex:

6. Let’s try some Working backwards now: write the following as a single logarithm.

7. Let’s try some Write the following as a single logarithm.

8. Let’s try something more complicated . . . Condense the logs log 5 + log x – log 3 + 4log 5

9. Let’s try something more complicated . . . Condense the logs log 5 + log x – log 3 + 4log 5

10. Let’s try something more complicated . . . Expand

11. Let’s try something more complicated . . . Expand

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