Natural Logarithm Definition

noun

A logarithm in which the base is the irrational number e (= 2.71828 ... ). For example, ln 10 = log _e 10 = approximately 2.30258.

American Heritage

A logarithm to the base e.

Webster's New World

(mathematics) The logarithm in base e; either the function that given returns such that or the value of .

The natural logarithm can be used to integrate 1/x.

Wiktionary

Synonyms:

Other Word Forms of Natural Logarithm

Singular:

natural logarithm

Plural:

natural-logarithms

From New Latin log naturalis, coined in 1668 by Nicholas Mercator in his book Logarithmo-technica.

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