The LN function returns the natural logarithm of a number. Natural logarithms are based on the constant e (2.71828182845904).
|number||The positive real number for which you want the natural logarithm|
|2||=LN(76)||4.330733||Natural logarithm of 76|
|3||=LN(2.7182818)||1||Natural logarithm of the value of the constant e|
|4||=LN(EXP(4))||4||Natural logarithm of e raised to the power of 4|
Note: LN is the inverse of the EXP function.
Common Function Error(s)
|Problem||What went wrong|
|#NUM!||Occurs if the supplied number argument is negative or zero|
|#NAME?||Occurs if the supplied number argument is not a numeric value|
The logarithm of a number, to a given base, is the power to which the base must be raised to give that number; it is the inverse operation to exponentiation.
The natural logarithm of a number, written or , is the logarithm to the base e.
See Wikipedia for more information on Natural Logarithm.