Logarithms: Expanding, Condensing, and Natural Logs

Complex numbers, rational functions, logarithms, sequences and series, matrix operations, etc.
Chiquita
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Joined: Sat Aug 01, 2009 2:32 am
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Logarithms: Expanding, Condensing, and Natural Logs

Postby Chiquita » Wed Aug 05, 2009 12:04 am

Okay guys- I have two log questions. I read the pages on logarithms, but they didn't seem to have what I was looking for.
First question- Use the properties of logarithms to condense.
4lnx - 5lny

Second question- Use the properties of logarithms to expand.
log23a4

So I know that the first question involves natural logs... but that's about it. I don't know how to condense/ expand logarithms- well I probably know how to, I just don't know it under that terminology. :wink:
And I can't remember what the properties of logs are. :confused:
Please help!

QM deFuturo
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Joined: Wed Aug 05, 2009 8:40 am
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Re: Logarithms: Expanding, Condensing, and Natural Logs

Postby QM deFuturo » Wed Aug 05, 2009 8:52 am

Well you can review the properties of logs here:

http://www.purplemath.com/modules/logrules.htm

If you look at these, and look at your equations, you will probably be able to figure out how to re-write them to solve the problem. :D

QM


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