Java - Math cbrt(double) method

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Description

The Java Math cbrt(double a) returns the cube root of a double value. For positive finite x, cbrt(-x) == -cbrt(x); that is, the cube root of a negative value is the negative of the cube root of that value's magnitude. Special cases −

• If the argument is NaN, then the result is NaN.

• If the argument is infinite, then the result is an infinity with the same sign as the argument.

• If the argument is zero, then the result is a zero with the same sign as the argument.

The computed result must be within 1 ulp of the exact result.

Declaration

Following is the declaration for java.lang.Math.cbrt() method

public static double cbrt(double a)

Parameters

a − a value.

Return Value

This method returns the cube root of a.

Exception

NA

Example 1

The following example shows the usage of Math cbrt() method.

package com.tutorialspoint;
public class MathDemo {
   public static void main(String[] args) {

      // get a double number
      double x = 125;

      // print the cube root of the number
      System.out.println("Math.cbrt(" + x + ")=" + Math.cbrt(x));
   }
}

Output

Let us compile and run the above program, this will produce the following result −

Math.cbrt(125.0)=5.0

Example 2

The following example shows the usage of Math cbrt() method of zero value.

package com.tutorialspoint;
public class MathDemo {
   public static void main(String[] args) {

      // get a double number
      double x = 0;

      // print the cube root of the number
      System.out.println("Math.cbrt(" + x + ")=" + Math.cbrt(x));
   }
}

Output

Let us compile and run the above program, this will produce the following result −

Math.cbrt(0.0)=0.0

Example 3

The following example shows the usage of Math cbrt() method of a negative number.

package com.tutorialspoint;
public class MathDemo {
   public static void main(String[] args) {

      // get a double number
      double x = -10;

      // print the cube root of the number
      System.out.println("Math.cbrt(" + x + ")=" + Math.cbrt(x));
   }
}

Output

Let us compile and run the above program, this will produce the following result −

Math.cbrt(-10.0)=-2.154434690031884