Log a m log b m log b a 9. Sometimes a logarithm is written without a base like this. Here a is a positive real number called as a base and x is an exponent the logarithm form is written as.
Log a n x.
Log a m n log a m log a n 6. Log a a 1 4. Engineers love to use it. Note that the requirement that x 0 x 0 is really a result of the fact that we are also requiring b 0 b 0.