Take this one for example

1/3log7^x +13log7^y - 5log5^z

How would I reduce this to a single logarithm?

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- June 5th 2009, 01:32 PMbilbobagginsLogarithms with an x,y, and z values?
Take this one for example

1/3log7^x +13log7^y - 5log5^z

How would I reduce this to a single logarithm? - June 5th 2009, 01:58 PMAmer
you should know that

apply these two formula you will get the answer - June 5th 2009, 02:04 PMbilbobaggins
- June 5th 2009, 02:07 PMAmer
- June 5th 2009, 02:17 PMbilbobaggins
- June 5th 2009, 02:31 PMAmer
the number the is multiplies with the

**Logarithm is a power for what is inside it**

see this

so

now

- June 5th 2009, 08:56 PMbilbobaggins
- June 6th 2009, 06:04 AMstapel
- June 6th 2009, 06:48 AMe^(i*pi)
- June 6th 2009, 09:22 AMbilbobaggins
- June 6th 2009, 09:23 AMbilbobaggins
- June 6th 2009, 10:51 AMAmer
change bases in logarithms

so you can write

to change it base so you can apply what I mention before

http://www.mathhelpforum.com/math-he...7b29a014-1.gif

consider as constant right