simple-squiggle/node_modules/mathjs/docs/reference/functions/log.md

Function log

Calculate the logarithm of a value.

For matrices, the function is evaluated element wise.

Syntax

math.log(x)
math.log(x, base)

Parameters

Parameter	Type	Description
x	number | BigNumber | Complex | Array | Matrix	Value for which to calculate the logarithm.
base	number | BigNumber | Complex	Optional base for the logarithm. If not provided, the natural logarithm of x is calculated. Default value: e.

Returns

Type	Description
number | BigNumber | Complex | Array | Matrix	Returns the logarithm of x

Throws

Type	Description

Examples

math.log(3.5)                  // returns 1.252762968495368
math.exp(math.log(2.4))        // returns 2.4

math.pow(10, 4)                // returns 10000
math.log(10000, 10)            // returns 4
math.log(10000) / math.log(10) // returns 4

math.log(1024, 2)              // returns 10
math.pow(2, 10)                // returns 1024

See also

exp, log2, log10, log1p