Solve Equation 3*x*x – 2*x +1 in Java Example

In this example, we input the interval values a and b. Each time loop is executed the value of fx is calculated and displayed on the screen for the value of x which ranges from a to b. On each iteration, x is incremented by 0.05. This continues until x is less than equal to the value of b that user inputs.

//Program to Solve Equation 3*x*x - 2*x +1 between values a and b 
 // and x varies in steps of 0.5 
  import java.util.Scanner; //Program uses Scanner class 
  public class Equation 
 { 
     public static void main(String[] args) 
     { 
        double fx , x; 
        int a , b ; 
        //Create Scanner Object to Obtain from Keyboard 
        Scanner input = new Scanner(System.in); 
        System.out.print("Enter the Interval :"); 
        a = input.nextInt(); //Read number 
        b = input.nextInt(); //Read number 
        for(x=a ; x<=b ; x += 0.5) 
        { 
           fx = 3*x*x -2*x + 1; 
           System.out.println( "x = " + x + " and fx = " + fx); 
          
        } 
         
     } 
 }