Logarithm, natural

Returns the natural logarithm of a given number. This is a single-value function. Ln is the inverse of the Exp function.

For more information on the Exponent function, see Exp (exponent).

Syntax

Ln(Argument)

Where:

Argument is a metric representing a list of positive real numbers.

Example

This simple example illustrates the results of the Ln function. The variable e=2.71828182845904.

Function/Result	Calculation
Ln (20) = 2.99573227355399	20 = ex where x is the natural logarithm; 20 = e2.99573227355399