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.
Remark
LN is the inverse of the EXP function.
Examples
| Formula |
Description (Result) |
| =LN(86) |
Natural logarithm of 86 (4.454347) |
| =LN(2.7182818) |
Natural logarithm of the value of the constant e (1) |
| =LN(EXP(3)) |
Natural logarithm of e raised to the power of 3 (3) |