Returns the natural logarithm of the factorial of x.
| Units: | FACTORIAL LN(dimensionless) --> dimensionless (the argument must be dimensionless) |
Examples
FACTORIAL_LN(3) is equal to LN(3 x 2 x 1) (= 1.791759469)
FACTORIAL_LN(4) is equal to LN(4 x 3 x 2 x 1) (= 3.1780538)
See also: FACTORIAL
Sample model: FACTORIAL.mdl in FunctionExamples
