LN

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