Laws of Logarithms

Laws of Logarithms:
1. log
a(u v) = loga(u) + loga(v) {The log of a product equals the sum of the logs.}
2. log
a(u/v) = loga(u) - loga(v) {The log of a quotient equals the difference of the logs.}
3. log
a(ur ) = r loga (u)

Write log3 x7 as a sum, difference and/or constant multiple of logarithms.

Show work. Which of the above three laws is applicable to this problem?

 

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