5 comments:

  1. import java.util.Scanner;

    class Test{

    public static void main(String ar[])
    {

    Scanner sc=new Scanner(System.in);
    double a,b,c,root1,root2,realp,imagp,disc;
    System.out.println("Enter Value of A, B and C");
    a=sc.nextDouble();
    b=sc.nextDouble();
    c=sc.nextDouble();

    if (a==0 || b==0 || c==0){
    System.out.println("Error: Roots cannot be determined \n");
    }
    else{
    disc=b*b-4.0*a*c;
    if(disc<0)
    {
    System.out.println("Imaginary Roots");
    realp=-b/(2.0*a);
    imagp=Math.sqrt(Math.abs(disc))/(2.0*a);
    System.out.println("Root1 = "+realp+" +i "+imagp);
    System.out.println("Root2 = "+realp+" -i "+imagp);
    }
    else if(disc==0)
    {
    System.out.println("Roots are real and equal");
    root1=-b/(2.0*a);
    root2=root1;
    System.out.println("Root1 = "+root1);
    System.out.println("Root2 = "+root2);
    }
    else
    {
    System.out.println("Roots are real and distinct");
    root1=(-b+(Math.sqrt(disc))/(2.0*a));
    root2=(-b-(Math.sqrt(disc))/(2.0*a));
    System.out.println("Root1 = "+root1);
    System.out.println("Root2 = "+root2);
    }
    }



    }
    }

    ReplyDelete
  2. import java.util.Scanner;
    import static java.lang.Math.sqrt;
    import static java.lang.Math.abs;
    class Test
    {

    public static void main(String ar[])
    {

    Double a,b,c,det,root1,root2,sqdet,det2;
    System.out.println("For equation: a(x^2)+b(x)+c\nEnter the value of a,b,c respectively: ");
    Scanner obj=new Scanner(System.in);
    a=obj.nextDouble();
    b=obj.nextDouble();
    c=obj.nextDouble();
    det=(b*b)-4*a*c;

    if(det==0)
    { System.out.println("Equal roots exist");
    root1=-b/2*a;
    root2=-b/2*a;
    System.out.println("Roots are"+root1+root2);
    }
    else if(det>0){
    System.out.println("Real and distinct roots exist");
    sqdet=Math.sqrt(det);
    root1=(-b+sqdet)/2*a;
    root2=(-b-sqdet)/2*a;
    System.out.println("Roots are"+root1+root2);
    }
    else
    {
    System.out.println("Imaginary roots exist");
    root1=-b/2*a;
    det2=Math.abs(det);
    root2=Math.sqrt(det2);
    System.out.print("Roots are: "+root1);
    System.out.print("+i"+root2);
    System.out.print(" and "+root1);
    System.out.print("+i"+root2);
    }


    }
    }

    ReplyDelete
  3. import java.util.*;
    public class Quadratic
    {
    public static void main(String args[])
    {
    float b,a,c,qua;
    System.out.println("Enter number");
    Scanner sc=new Scanner(System.in);
    b=sc.nextFloat();
    a=sc.nextFloat();
    c=sc.nextFloat();
    qua=b*b-4*a*c;
    System.out.println(qua);
    }
    }

    ReplyDelete
  4. import java.util.Scanner;
    class Quad{
    public static void main(String ar[]){
    Scanner obj=new Scanner(System.in);
    double root1,root2;
    int a,b,c,det;
    System.out.println("enter the values of a,b,c in ax^2+bx+c=0 respectively");
    a=obj.nextInt();
    b=obj.nextInt();
    c=obj.nextInt();
    det=(b*b)-4*(a*c);
    while(det>=0){
    root1=(-b+Math.sqrt(det))/2*a;
    root2=(-b-Math.sqrt(det))/2*a;
    System.out.println("roots of given quad eqn are"+root1+" and "+root2);
    break;
    }
    if(det<0)
    System.out.println("roots dont exist");
    }
    }

    ReplyDelete
  5. import java.util.Scanner;
    public class Quadratic
    {
    public static void main(String args[])
    {
    float b,a,c,qua;
    System.out.println("Enter number \n");
    Scanner s=new Scanner(System.in);
    System.out.println("Enter value of a: \n");
    a=s.nextFloat();
    System.out.println("Enter the value of b: \n");
    b=s.nextFloat();
    System.out.println("Enter the value of c: \n");
    c=s.nextFloat();
    qua=b*b-4*a*c;
    System.out.println(qua);
    }
    }

    ReplyDelete