ReferenceExpressionsMath and logicNatural LogarithmReturn the natural logarithm of a.ln( a )# Return the natural logarithm of a. Description# ln( a ) Returns the natural logarithm (base-e logarithm) of a. Parameters# a Value Return value# This function returns natural logarithm of a. Example usage# ln( 20 ) Returns 2.9957… Last updated Sep 2, 2019PreviousMinNextRandom number