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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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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. Lets try some Working backwards now: write the following as a single logarithm.
7. Lets try some Write the following as a single logarithm.
8. Lets try something more complicated . . . Condense the logs
log 5 + log x log 3 + 4log 5
9. Lets try something more complicated . . . Condense the logs
log 5 + log x log 3 + 4log 5
10. Lets try something more complicated . . . Expand
11. Lets try something more complicated . . . Expand