A logarithmic function describes a function for a base. Therefore 3 is the logarithm of 8 to base 2 or 3 log 2 8. The logarithm is the inverse function of the exponential function.
In other words it passes through 10 equals 1 when xa in other words it passes through a1 is an Injective one-to-one function.
Log b a c b c a. A c bc a. The logarithm of 8 with base 2 is 3. 1 Multiplication inside the log can be turned into addition outside the log and vice versa.