Quadratic Equation
Write a program that will determine the roots of quadratic equations ax^2 + bx +c. the program should repeatedly prompt the user for values of a, b, and c. For each set of values, the program should solve the corresponding equation, if it has a solution, or print an appropriate message, if it has no solution.Your console should look similart to:
Do you want to solve an equation (y/n)? y
Enter a: 1
Enter b: -5
Enter c: 6
Root1: 2.0
Root2: 3.0
Do you want to solve an equation (y/n)? y
Enter a: 1
Enter b: -1
Enter c: 4.25
Root1: real part: 0.5 imaginary part: -2.0
Root2: real part: 0.5 imaginary part: 2.0
View Answers
March 5, 2010 at 11:49 AM
Hi Friend,
Try the following code:
import java.util.*;
class QuadraticEquation
{
public static void main(String[]args){
Scanner input=new Scanner(System.in);
System.out.print("Do you want to solve an equation (y/n): ");
String st=input.next();
if(st.equals("y")){
System.out.print("Enter the value of a: ");
double a=input.nextDouble();
System.out.print("Enter the value of b: ");
double b=input.nextDouble();
System.out.print("Enter the value of c: ");
double c=input.nextDouble();
double eq=b*b-4*a*c;
double r1= -b+Math.sqrt(eq);
double r2= -b-Math.sqrt(eq);
double Root1=r1/2*a;
double Root2=r2/2*a;
System.out.println("Root 1 ="+Root1);
System.out.println("Root 2 ="+Root2);
}
else{
System.exit(0);
}
}
}
Thanks
Try the following code:
import java.util.*;
class QuadraticEquation
{
public static void main(String[]args){
Scanner input=new Scanner(System.in);
System.out.print("Do you want to solve an equation (y/n): ");
String st=input.next();
if(st.equals("y")){
System.out.print("Enter the value of a: ");
double a=input.nextDouble();
System.out.print("Enter the value of b: ");
double b=input.nextDouble();
System.out.print("Enter the value of c: ");
double c=input.nextDouble();
double eq=b*b-4*a*c;
double r1= -b+Math.sqrt(eq);
double r2= -b-Math.sqrt(eq);
double Root1=r1/2*a;
double Root2=r2/2*a;
System.out.println("Root 1 ="+Root1);
System.out.println("Root 2 ="+Root2);
}
else{
System.exit(0);
}
}
}
Thanks
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