# math/ln Natural logarithm (base e) of `x`. ## Syntax

[math/ln $x]

## Parameters - `$x` — Positive number ## Examples

[math/ln 1]                # 0
[math/ln 2.718281828459045]  # 1

## Returns Number — natural logarithm of `$x`. ## See Also `math/log10`, `math/log2`, `math/exp`, `math/euler`