log

To calculate the logarithm

The function returns the logarithm of a number to a base. If no parameter is specified for the base, it is 10. In the case of 0, the result is -∞ (minus infinity).

Syntax

log(number)

log(number, number)

Return

number

Example

log(x,y) To calculate the logarithm of a number x to the base of a number y.

log(x) To calculate the logarithm of a number x to the base of 10.

log(1)

Result: 0

log(0)

Result: -∞

log(3,5)

Result: 0.6826061944859853