Returns the natural logarithm of a number. Natural logarithms are based on the constant e (2.71828182845904).
Syntax
LN(number)
Number is the positive real number for which you want the natural logarithm.
Remarks
LN is the inverse of the EXP function.
Examples
LN(86)
equals 4.454347
LN(2.7182818)
equals 1
LN(EXP(3))
equals 3
EXP(LN(4))
equals 4