A logarithm is a mathematical function that serves as the inverse of exponentiation. It represents the exponent to which a base must be raised to obtain a specific number.
The common notation is Logb(x), where b is the base and x is the argument.
For example, Log2(8) = 3 because 23 = 8. Logarithms are useful for solving exponential equations, measuring the scale of events, and analyzing growth or decay in certain scientific and financial processes.