Natural Logarithm


 * This page describes the monadic arithmetic function. For the dyadic logarithm function, see Logarithm.

, or Natural Log, is a monadic scalar function which computes the natural logarithm of the argument. Logarithm shares the glyph  with the dyadic arithmetic function Logarithm. The glyph, a composition of the glyphs for Circular and Exponential  to indicate its close mathematical ties with these two functions, is a stylised tree log.

Properties
Natural logarithm is a special case of Logarithm with the default left argument of e.

Natural logarithm and exponential  are inverses of each other, except where the natural log is undefined.

Documentation

 * Dyalog
 * APLX
 * J Dictionary, NuVoc