JavaScript | Math.cbrt() function

The Math.cbrt() function is an inbuilt function in JavaScript which is used to find cube root of a number.
Syntax:

Math.cbrt(x)

Parameters:

• Here x is simply a number whose cube root need to find.

Return value:

• It returns the cube root of the given number.

Example:

Input:
Math.cbrt(8)

Output:
2

Explanation:
∛8
= ∛2*2*2
= 2
Here cube root of 8 is calculated to 2 because when any 3 times repeated any number is present
inside of the cube root then only one number is taken out as the value of the cube root.

Input:
Math.cbrt(64)

Output:
4

Explanation:
∛64
= ∛4*4*4
= 4

Let’s see JavaScript program:

Output:

> 4
> 3
> 0
> -1
> -3
> Infinity

Errors and Exceptions:

1. It is an error case because cube root of complex number can not be found that is why its parameter gives error.

   // cube root of complex number can not be calculated. console.log(Math.cbrt(1 + 2i));

   Output:

   Error: Invalid or unexpected token

2. Cube root of string can not be found that is why string parameter of the function gives NaN i.e, not a number.Only integer value can be used as the parameter for the function.

   // Only number can be used as the parameter // here string as parameter gives NaN i.e, not a number. console.log(Math.cbrt("gfg"));

   Output:

   > NaN

Application:

• Whenever we need to get cube root of any number that time we take the help of the Math.cbrt() function in JavaScript.
  Let’s see JavaScript program:

  // Here the Math.cbrt() function calculates cube root for // different numbers taken as function's parameter. console.log(Math.cbrt(125)); console.log(Math.cbrt(23));

  Output:

  > 5
  > 2.8438669798515654