ICSE Class 10 Computer Applications Question 36 of 69

Iterative Constructs in Java — Question 36

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36
Question

Question 30(iii)

Write a program in Java to find the sum of the given series:

1x1+2x2+3x3+...+nxn\dfrac{1}{x^1} + \dfrac{2}{x^2} + \dfrac{3}{x^3} + ... + \dfrac{n}{x^n}

import java.util.Scanner;

public class KboatSeries
{
    public static void main(String args[]) {

        Scanner in = new Scanner(System.in);
        System.out.print("Enter x: ");
        int x = in.nextInt();
        System.out.print("Enter n: ");
        int n = in.nextInt();
        double sum = 0;

        for (int i = 1; i <= n; i++) {
            sum += (i / Math.pow(x, i));
        }
        
        System.out.println("Sum=" + sum);
    }
}
Output
BlueJ output of KboatSeries.java
Answer