Log a 1 0. It states that when finding the logarithm of a power of a number this can be evaluated by multiplying the logarithm of the number by that power. The sum of logarithms is the logarithm of the product of the three powers and the difference of logarithms is the logarithm of the quotient of their powers.
Change of Base Rule.
Level 6 - Solving exponential equations using logarithms. Log b x ln x ln b or log b x log 10 x log 10 b. Log b MN log b M log b N. Log b MN log b M log b N.