LN

Returns the natural logarithm[1] of a number.

Syntax:

LN(number)

number must be > 0.

Example:

LN(78)

returns the number 4.3567.

  1. Weisstein, Eric W. "Logarithm." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/Logarithm.html