mathjs/docs/reference/functions/cbrt.md

Function cbrt

Calculate the cubic root of a value.

For matrices, the function is evaluated element wise.

Syntax

math.cbrt(x)

Parameters

Parameter	Type	Description
x	number | BigNumber | Complex | Unit | Array | Matrix	Value for which to calculate the cubic root.
allRoots	boolean	Optional, false by default. Only applicable when x is a number or complex number. If true, all complex roots are returned, if false (default) the principal root is returned.

Returns

Type	Description
number | BigNumber | Complex | Unit | Array | Matrix	Returns the cubic root of x

Examples

math.cbrt(27);                  // returns 3
math.cube(3);                   // returns 27
math.cbrt(-64);                 // returns -4
math.cbrt(math.unit('27 m^3')); // returns Unit 3 m
math.cbrt([27, 64, 125]);       // returns [3, 4, 5]

var x = math.complex('8i');
math.cbrt(x);                   // returns Complex 1.7320508075689 + i
math.cbrt(x, true);             // returns Matrix [
                                //    1.7320508075689 + i
                                //   -1.7320508075689 + i
                                //   -2i
                                // ]

See also

square, sqrt, cube