Log

Description of formula:
Calculates logarithm of a specified number to the specified base. If you do not pass second parameter, constant e will be used as a logarithm base.

Syntax:
log(number, [base])

Parameters:

number

(type: Number) The number whose logarithm is to be calculated

base

(type: Number) (optional parameter) The base of a logarithm

Returned type:

Number

Examples:
=log(2)
=log(8,2)
=log(A1)