Java Math.pow Method

Method Syntax:

a^b = Math.pow(double a, double b)

Example 1: Calculate 2^3 with Math.pow() method.

System.out.println(Math.pow(2, 3)); //8.0

 

Example 2: Calculate square root of 4 with Math.pow() method.

double num = 4;
double sqr = Math.pow(4, 0.5);
System.out.println(sqr); //2.0

 

Example 3: Calculate result of given operation (i and r should be user input)

Scanner input = new Scanner(System.in);
System.out.print("i= > ");
int i = input.nextInt();
System.out.print("r= > ");
int r = input.nextInt();

double result = r*(1/Math.pow((1+i)/2.0 , 2) / (Math.pow(i, 1/3.0)));
System.out.println("result: "+result);	

Console output:

i= > 6
r= > 20
result: 0.8984836051413949