Log Rules:
Since logs are exponents, the rules governing logs are very similar to the laws of exponents. The most common log rules are the following:
1. logb (ABC) = logb A + logb B + logb C
2. logb (A/B) = logb A - logb B
3. logb (An) = nlogb A
4. logb b = 1
5. logb n√A = logb A1/n = (1/n)logb A
6. logb 1 = 0
7. logb (1/A) = logb 1 - logb A = -logb A