![LOG]({"bg": "//theme.zdassets.com/theme_assets/9691885/e106cc8a79a6a41c781c71d999cffaa33b481de7.jpg"})
![LOG]({"bg": "//theme.zdassets.com/theme_assets/9691885/d38d9cc5a4fcb160800cb7a8f0e0cb60aaa36d2e.jpg"})
The function LOG takes two Numbers, call them x and b, and returns a numerical approximation of logb(x).
This function requires a single Number as input. It will return another Number: by default, the base 10 logarithm of the given number. To calculate the a logarithm with another base, this function also accepts an optional Number as input to define the base of the logarithm.
Declaration
LOG(x, b) -> number
Parameters
- x (required, type: Number)
- Any positive number.
- b (optional, type: Number, default: 10)
- The base of the logarithm.
Return Values
- number (type: Number)
- A numerical estimation of the base b logarithm of n.
- Mathematically, this is given by logb(x).
Examples
The following example calculates a numerical estimation of log10(2). Note that the logarithm base is not explicitly specified, as 10 is the default value of b:
LOG(2) -> 0.30102999566398114
The following example calculates a numerical estimation of log2(4):
LOG(4, 2) -> 2