Log 10 3 7 log 10 3 - log 10 7 Logarithm power rule. Log a m log b mlog a b 8. For example two numbers can be multiplied just by using a logarithm table and adding.
Log b x y log b x - log b y For example.
Log a b a log b a 10. On a calculator the Common Logarithm is the log button. Log ab x if and only if ax b The following types of logarithms are exist log a b - logarithm of number b on the base a a 0 a 1 b 0. Logarithm formulas Logarithm formulas 1.