Logarithm
Symbol
log
Definition
The logarithm of a number is the exponent to which another fixed value, the base, must be raised to produce that number.
Usage
Used in solving exponential equations, measuring earthquake intensity (Richter scale), and in information theory.
Examples
-
Natural logarithm
\ln(x) = y \iff e^y = x -
Logarithm with base 10
\log_{10}(100) = 2