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

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, log10

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