Giai Phuong Trinh Bac 2

by Admin Mon Sep 13, 2010 1:23 am

#include
#include
#include
int main ()
{
float a,b,c,delta;
printf("\n Chuong trinh giai phuong trinh bac 2");
printf("a=");
scanf("%f",&a);
printf("b=");
scanf("%f",&b);
printf("c=");
scanf("%f",&c);
delta=b*b-4*a*c;
if (delta<0)
printf("Phuong trinh vo nghiem");
if (delta==0)
printf("Phuong trinh co nghiem kep x1=x2= %f",(-b+sqrt(delta))/(2*a));
if (delta>0)
{
printf("\n Phuong trinh co 2 nghiem phan biet");
prinft("x1=%f x2=%f",(-b+sqrt(delta))/(2*a),(-b-sqrt(delta))/(2*a));
}
getch ();
return 0;
}