Noun
logarithmic function (plural logarithmic functions)
(mathematics) Any function in which an independent variable appears in the form of a logarithm; they are the inverse functions of exponential functions
For instance, one may define the base b of a logarithm by : where b is a parameter that indicates which logarithmic function is being used. Source: Internet
Moreover, because the logarithmic function log(x) grows very slowly for large x, logarithmic scales are used to compress large-scale scientific data. Source: Internet
The function that assigns to y its logarithm is called logarithm function or logarithmic function (or just logarithm). Source: Internet