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8.24k
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27
|
13400
|
int main()
{
int n,i;
double a,b,c,d,x1,x2,e,f;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
if(d>0)
{
x1=(sqrt(d)-b)/(2*a);
x2=(-sqrt(d)-b)/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(d==0)
{
x1=-b/(2*a);
x2=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
if(d<0)
{
e=sqrt(-d)/(2*a);
f=-b/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",f,e,f,e);
}
}
return 0;
}
|
27
|
13401
|
int main()
{
double a,b,c,w,x1,x2;
int n,i;
scanf("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
w=b*b-4*a*c;
if (w>0)
{
w=sqrt(w);
x1=(0-b+w)/(2*a);
x2=(0-b-w)/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(w<0)
{
w=sqrt(0-w)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(-b)/(2*a),w,(-b)/(2*a),w);
}
else if(w==0)
{
x1=x2=(0-b)/(2*a);
printf("x1=x2=%.5f\n",x1);
}
}
return 0;
}
|
27
|
13402
|
main()
{
int n,i;
double a,b,c,root1,root2,shi,xu,t;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
t=b*b-4*a*c;
if(t>0)
{
if(b==0)
printf("x1=0.00000+%.5f;x2=0.00000+%.5f\n",sqrt(t)/(2*a),-sqrt(t)/(2*a));
else
root1=(-b + sqrt(t))/(2*a);
root2=(-b - sqrt(t))/(2*a);
printf("x1=%.5f;x2=%.5f\n",root1,root2);
}
else
{
if(t<0)
{
shi=-b/(2*a);
xu=sqrt(-t)/(2*a);
if(shi==0)
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",xu,xu);
else
{
if(xu>0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",shi,xu,shi,xu);
else
printf("x1=%.5f-%.5fi;x2=%.5f+%.5fi\n",shi,-xu,shi,-xu);
}
}
else
{
if(b==0)
printf("x1=x2=0");
else
root1=-b/(2*a);
printf("x1=x2=%.5f\n",root1);
}
}
}
return 0;
}
|
27
|
13403
|
main()
{
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
double a,b,c,m;
scanf("%lf %lf %lf",&a,&b,&c);
m=b*b-4*a*c;
if(fabs(m)<=1e-6)
{
if(fabs(b)<=1e-6)
printf("x1=x2=%.5f",b/(2*a));
else
printf("x1=x2=%.5f",-b/(2*a));
}
else
if(m>1e-6)
printf("x1=%.5lf;x2=%.5lf",(-b+sqrt(m))/(2*a),(-b-sqrt(m))/(2*a));
else
{
if(fabs(b)<=1e-6)
printf("x1=%.5lf+%.5lfi;x2=%.5f-%.5fi",b/(2*a),sqrt(-m)/(2*a),b/(2*a),sqrt(-m)/(2*a));
else
printf("x1=%.5lf+%.5lfi;x2=%.5f-%.5fi",-b/(2*a),sqrt(-m)/(2*a),-b/(2*a),sqrt(-m)/(2*a));
}
printf("\n");
}
}
|
27
|
13404
|
int main(int argc, char* argv[])
{
int n,i;
double a[1000],b[1000],c[1000];
double x1,x2,d,e;
scanf("%d",&n);
for(i=0;i<n;i++){
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
if((b[i]*b[i]-4*a[i]*c[i])>0){
x1 =(-b[i]+sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2 =(-b[i]-sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if((b[i]*b[i]-4*a[i]*c[i])==0){
x1=-b[i]/(2*a[i]);
printf("x1=x2=%.5lf\n",x1);
}
else{
d=-b[i]/(2*a[i]);
e=sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
if(d==0){printf("x1=-0.00000+%.5lfi;x2=-0.00000-%.5lfi\n",e,e);}
else{printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",d,e,d,e);}
}
}
return 0;
}
|
27
|
13405
|
int main()
{
int n;
scanf("%d",&n);
while(n--)
{
double a,b,c;
scanf("%lf %lf %lf",&a,&b,&c);
double x1,x2,i;
if(b*b-4*a*c>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2.0*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2.0*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(b*b-4*a*c==0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2.0*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2.0*a);
printf("x1=x2=%.5lf\n",x1,x2);
}
else {
double m;
m= sqrt(-(b*b-4*a*c))/(2.0*a);
x1=(-b)/(2.0*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,m,x1,m);
}
}
return 0;
}
|
27
|
13406
|
int main()
{
int n,i;
double a,b,c,dt,p,q;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
dt=b*b-4*a*c;
if(dt==0)
{
p=-b/2/a;if(p==0)p=0;
printf("x1=x2=%.5lf\n",p);
}
else if(dt>0)
{
p=(-b+sqrt(dt))/2/a;q=(-b-sqrt(dt))/2/a;
printf("x1=%.5lf;x2=%.5lf\n",p,q);
}
else
{
p=-b/2/a;q=sqrt(-dt)/2/a;if(p==0)p=0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
return 0;
}
|
27
|
13407
|
void main()
{
double a[32768],b[32768],c[32768];
int n,i;
double d,x1,x2,e;
scanf("%d",&n);
for(i=1;i<=n;i++)
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
for(i=1;i<=n;i++)
{
if (fabs(a[i])<1e-15)
printf("Wrong\n");
else
{
d=b[i]*b[i]-4*a[i]*c[i];
if (fabs(d)<1e-15)
{
x1=-b[i]/(2*a[i]);
x2=-b[i]/(2*a[i]);
if (fabs(x1)<5e-6) x1=0;
if (fabs(x2)<5e-6) x2=0;
printf("x1=x2=%.5f\n",x1);
}
else if (d>=1e-15)
{
x1=(-b[i]+sqrt(d))/(2*a[i]);
x2=(-b[i]-sqrt(d))/(2*a[i]);
if (fabs(x1)<5e-6) x1=0;
if (fabs(x2)<5e-6) x2=0;
if(fabs(("%.5f",x1)-("%.5f",x2))<5e-6)
printf("x1=x2=%.5f\n",x1);
else printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
x1=-b[i]/(2*a[i]);
x2=-b[i]/(2*a[i]);
if (fabs(x1)<5e-6) x1=0;
if (fabs(x2)<5e-6) x2=0;
e=sqrt(-d)/(2*a[i]);
if (fabs(e)<5e-6) printf("x1=x2=%.5f\n",x1);
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,e,x2,e);
}
}
}
}
|
27
|
13408
|
int main()
{float a,b,c,delta;
int n,i;
cin>>n;
for(i=1;i<=n;i++)
{cin>>a>>b>>c;
delta=b*b-4*a*c;
if(b!=0)
{
if(delta>0)
{cout<<"x1=";
printf("%.5f", (-b + sqrt(b*b-4*a*c))/(2*a));
cout<<";x2=";
printf("%.5f", (-b - sqrt(b*b-4*a*c))/(2*a));
cout<<endl;
}
if(delta==0)
{cout<<"x1=x2=";
printf("%.5f", (-b - sqrt(b*b-4*a*c))/(2*a));
cout<<endl;
}
if(delta<0)
{delta=-delta;
cout<<"x1=";
printf("%.5f", (-b)/(2*a));
cout<<"+";
printf("%.5f", sqrt(delta)/(2*a));
cout<<"i;x2=";
printf("%.5f", (-b)/(2*a));
cout<<"-";
printf("%.5f", sqrt(delta)/(2*a));
cout<<"i"<<endl;
}
}
else
{
if(delta>0)
{cout<<"x1=";
printf("%.5f", (b + sqrt(b*b-4*a*c))/(2*a));
cout<<";x2=";
printf("%.5f", (b - sqrt(b*b-4*a*c))/(2*a));
cout<<endl;
}
if(delta==0)
{cout<<"x1=x2=";
printf("%.5f", (b - sqrt(b*b-4*a*c))/(2*a));
cout<<endl;
}
if(delta<0)
{delta=-delta;
cout<<"x1=";
printf("%.5f", (b)/(2*a));
cout<<"+";
printf("%.5f", sqrt(delta)/(2*a));
cout<<"i;x2=";
printf("%.5f", (b)/(2*a));
cout<<"-";
printf("%.5f", sqrt(delta)/(2*a));
cout<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13409
|
int main()
{
int n;
float a,b,c,d,j,k;
double x1,x2;
char i;
cin>>n;
d=1;
i='i';
for(d=1;d<=n;d=d+1)
{
cin>>a>>b>>c;
if(b*b-4*a*c>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x1<<fixed<<setprecision(5)<<";x2="<<x2<<endl;
}
if(b*b-4*a*c==0)
{
if(b==0)
{
x1=(b + sqrt(b*b-4*a*c))/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else
{
x1=(-b + sqrt(b*b-4*a*c))/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
}
if(b*b-4*a*c<0)
{
if(b==0)
{
j=0;
k=sqrt(4*a*c-b*b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<j<<"+"<<fixed<<setprecision(5)<<k<<i<<";x2="<<fixed<<setprecision(5)<<j<<"-"<<fixed<<setprecision(5)<<k<<i<<endl;
}
else
{
j=-b/(2*a);
k=sqrt(4*a*c-b*b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<j<<"+"<<fixed<<setprecision(5)<<k<<i<<";x2="<<fixed<<setprecision(5)<<j<<"-"<<fixed<<setprecision(5)<<k<<i<<endl;
}
}
}
return 0;
}
|
27
|
13410
|
int main()
{
float a,b,c;
int i,n;
double p,q;
cin>>n;
for(i=0;i<n;i++)
{
cin>>a>>b>>c;
{if(b==0)
p=0.0;
if(b!=0)
p=-b/(2*a);
}
q=b*b-4*a*c;
if(q>0)
cout<<"x1="<<fixed<<setprecision(5)<<p+(sqrt(q)/2/a)<<";x2="<<p-(sqrt(q)/2/a)<<endl;
if(q==0)
cout<<"x1=x2="<<fixed<<setprecision(5)<<p<<endl;
if(q<0)
cout<<"x1="<<fixed<<setprecision(5)<<p<<"+"<<(sqrt(-q)/2/a)<<"i"<<";x2="<<p<<"-"<<(sqrt(-q)/2/a)<<"i"<<endl;
}
return 0;
}
|
27
|
13411
|
int main()
{
int n,i;
double a,b,c,x,y;
cin>>n;
for(i=0;i<n;i++)
{
cin>>a>>b>>c;
if(b*b-4*a*c>0)
{
x=(-b+sqrt(b*b-4*a*c))/(2*a);
y=(-b-sqrt(b*b-4*a*c))/(2*a);
cout<<"x1=";
printf("%.5lf",x);
cout<<";x2=";
printf("%.5lf\n",y);
}
else if(b*b-4*a*c==0)
{
x=(-b+sqrt(b*b-4*a*c))/(2*a);
cout<<"x1=x2=";
printf("%.5lf\n",x);
}
else
{
x=(sqrt(-b*b+4*a*c))/(2*a);
if(b!=0)
y=(-b)/(2*a);
else y=0;
cout<<"x1=";
printf("%.5lf",y);
cout<<"+";
printf("%.5lf",x);
cout<<"i;x2=";
printf("%.5lf",y);
cout<<"-";
printf("%.5lf",x);
cout<<"i"<<endl;
}
}
return 0;
}
|
27
|
13412
|
int main(){
int n;cin >> n;
double a,b,c,x1,x2;
while(n--){
cin >> a >> b >> c;
if((b*b-4*a*c)>0){
x1 = (-b)/(2*a);
x2 = (sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1+x2,x1-x2);
}else if((b*b-4*a*c)<0){
x1 = (0-b)/(2*a);
//if(x1 == 0) x1 = 0;
x2 = (sqrt(4*a*c-b*b))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
} else{
printf("x1=x2=%.5f\n",(-b)/(2*a));
}
}
return 0;
}
|
27
|
13413
|
double a,b,c;
double x1,x2,p,q;
int n;
int main()
{
cin >> n;
while(n--)
{
cin >> a >> b >> c;
if((b*b-4*a*c)>0)
{
x1 = (0-b+sqrt(b*b-4*a*c))/(a*2);
x2 = (0-b-sqrt(b*b-4*a*c))/(a*2);
cout << setprecision(5) << fixed;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if((b*b-4*a*c)==0)
{
x1 = (0-b+sqrt(b*b-4*a*c))/(a*2);
x2 = (0-b-sqrt(b*b-4*a*c))/(a*2);
cout << setprecision(5) << fixed;
printf("x1=x2=%.5f\n",x1);
}
else if((b*b-4*a*c)<0)
{
x1 = (0-b)/(a*2);
p=sqrt(4*a*c-b*b)/(a*2);
x2 = (0-b)/(a*2);
q=-sqrt(4*a*c-b*b)/(a*2);
cout << setprecision(5) << fixed;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,p,x2,p);
}
}
return 0;
}
|
27
|
13414
|
int main()
{
double i,n,x1,x2;
float a,b,c,x,y;
cin>>n;
for(i=1;i<=n;i++)
{ cin>>a>>b>>c;
if(b==0)
{
if((b*b-4*a*c)>0)
{ x1 = (b + sqrt(b*b-4*a*c))/(2*a);
x2 = (b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;",x1);
printf("x2=%.5f\n",x2);
}
else if((b*b-4*a*c) == 0)
{ x1 = (b + sqrt(b*b-4*a*c))/(2*a);
x2 = (b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
x = (b /(2*a));
y = (sqrt(-b*b+4*a*c))/(2*a);
printf("x1=%.5f+%.5fi;",x,y);
printf("x2=%.5f-%.5fi\n",x,y);
}
}
else
{
if((b*b-4*a*c)>0)
{ x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;",x1);
printf("x2=%.5f\n",x2);
}
else if((b*b-4*a*c) == 0)
{ x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
x = (-b /(2*a));
y = (sqrt(-b*b+4*a*c))/(2*a);
printf("x1=%.5f+%.5fi;",x,y);
printf("x2=%.5f-%.5fi\n",x,y);
}
}
}
return 0;
}
|
27
|
13415
|
main()
{
int n,i;
double a,b,c,d,e,f,x1,x2;
scanf("%d\n",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a ,&b, &c);
d=b*b-4*a*c;
if (d>0)
{
x1 = (0-b + sqrt(b*b-4*a*c))/(2*a) ;
x2 = (0-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(d==0)
{
x1 = (0-b)/(2*a) ;
printf("x1=x2=%.5f\n",x1);
}
if(d<0)
{
e=(0-b)/(2*a);
f= sqrt(-d)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,f,e,f);
}
}
}
|
27
|
13416
|
int main()
{
int k,num;
cin >> num;
for ( k=0 ; k<num ; k++ )
{
double a,b,c,x1,x2,sb,xb;
cin>>a>>b>>c;
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
sb = -b/(2*a);
xb = (sqrt(4*a*c-b*b))/(2*a);
if (fabs(sb)<0.000001)
sb=0;
cout<<fixed;
if ((b*b-4*a*c)>=0)
{
if (x1==x2) cout << setprecision(5) << "x1=x2=" << x1 << endl;
else cout << setprecision(5) << "x1=" << x1 << ";" << "x2=" << x2 << endl;
}
else cout << setprecision(5) << "x1=" << sb << "+" << xb << "i" << ";" << "x2=" << sb << "-" << xb << "i" << endl;
}
return 0;
}
|
27
|
13417
|
void coutnoneg (double a)
{
if(a==0) cout<<0.0;
else cout<<a;
}
int main()
{
int n;
double a,b,c,d,x1,x2;
cout<<fixed<<setprecision(5);
for(cin>>n;n--;)
{
cin>>a>>b>>c;
d=b*b-4*a*c;
if(d>0)
{
x1 = ( -b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
cout<<"x1=";
coutnoneg(x1);
cout<<";x2=";
coutnoneg(x2);
}
if(d==0)
{
x1 = (-1*b)/(2*a);
cout<<"x1=x2=";
coutnoneg(x1);
}
else if(d<0)
{
x1 = (-b)/(2*a);
x2 = sqrt(-d)/(2*a);
cout<<"x1=";
coutnoneg(x1);
cout<<'+';
coutnoneg(x2);
cout<<"i";
cout<<";x2=";
coutnoneg(x1);
cout<<'-';
coutnoneg(x2);
cout<<"i";
}
cout<<endl;
}
return 0;
}
|
27
|
13418
|
//x1 = (-b + sqrt(b*b-4*a*c))/(2*a)
//x2 = (-b - sqrt(b*b-4*a*c))/(2*a)
//??????? ax2 + bx + c = 0 ?????a???0?
int main()
{
int n,i;
cin >> n;
for(i = 1;i<=n;i++)
{
double a,b,c,delta,x1,x2;
cin >> a >>b >> c;
delta=b*b-4*a*c;
if(delta >0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a) ;
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(delta==0)
{
x1=x2=-b/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
double antidel=fabs(delta);
double d,e,f;
d=(sqrt(antidel))/(2*a);
f=fabs(d);
if(b!=0)e=-b/2/a;
else e=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,f,e,f);
}
}
return 0;
}
|
27
|
13419
|
int main(int argc, char* argv[])
{
int n,i;
double a,b,c,d,e;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
if (b==0)
e=0;
else
e=(-b)/(2*a);
if(d>0)
printf("x1=%.5lf;x2=%.5lf\n",e+sqrt(d)/(2*a),e-sqrt(d)/(2*a));
else if (d<0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", e,sqrt(-d)/(2*a),e,sqrt(-d)/(2*a));
else if(d==0)
printf("x1=x2=%.5lf\n",e);
}
return 0;
}
|
27
|
13420
|
int main()
{
int n,i;
cin>>n;
i=0;
double a[100],b[100],c[100],x1,x2,xubu;
while (i<n)
{
cin>>a[i]>>b[i]>>c[i];
i++;
}
i=0;
while(i<n)
{
if(b[i]*b[i]-4*a[i]*c[i]>0)
{
x1=(-b[i]+sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2=(-b[i]-sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
if(x1==-0) x1=0;
if(x2==-0) x2=0;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
i++;
}
else if (b[i]*b[i]-4*a[i]*c[i]==0)
{
x1=x2=(-b[i])/(2*a[i]);
if(x1==-0) x1=x2=0;
printf("x1=x2=%.5f\n",x1,x2);
i++;
}
else
{
xubu=sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
x1=x2=(-b[i])/(2*a[i]);
if(x1==-0) x1=x2=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,xubu,x2,xubu);
i++;
}
}
return 0;
}
|
27
|
13421
|
int main()
{
float a,b,c;
double m,n,x,y;
cin>>n;
for(m=1;m<=n;m=m+1){
cin>>a>>b>>c;
if(b*b-4*a*c>=0){
x = (-b + sqrt(b*b-4*a*c))/(2*a);
y = (-b - sqrt(b*b-4*a*c))/(2*a);
if(x!=y)
printf("x1=%.5f;x2=%.5f\n",x,y);
else if(x==y)
printf("x1=x2=%.5f\n",x);}
else if(b*b-4*a*c<0){
x=b/2/a*(-1);
y=(sqrt(-b*b+4*a*c))/2/a;
if(x!=0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x,y,x,y);
else if(x==0)
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",y,y);
}
}
return 0;
}
|
27
|
13422
|
int main(int argc, char* argv[])
{
int i,n;
double a,b,c,p,q;
double x1,x2,s;
scanf("%d",&n);
for(i=0;i<n;i++){
scanf("%lf%lf%lf",&a,&b,&c);
s=b*b-4*a*c;
if(s>0){
x1 = (-b + sqrt(s))/(2*a);
x2 = (-b - sqrt(s))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(s==0){
x1=-b/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else{ if(b!=0)
{double p=sqrt(-s)/(2*a),q=-b/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",q,p,q,p);
}
else
{double p=sqrt(-s)/(2*a),q=0.00000;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",q,p,q,p);
}
}
}
return 0;}
|
27
|
13423
|
/*?????????
???
2012?10?7?10:46:21*/
int main()
{
int n,i;
float a[1000],b[1000],c[1000];
double x1[1000],x2[1000],d[1000],D[1000],y[1000];
cin>>n; //??????n
for(i=1;i<=n;i++) //???i=n???
{
cin>>a[i]>>b[i]>>c[i]; //??3???
d[i]=b[i]*b[i]-4*a[i]*c[i]; //???
if(d[i]==0) //???=0?????
{x1[i]=(0-b[i])/(2*a[i]);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1[i]<<endl;
}
if(d[i]>0) //???>0 ???????
{x1[i]=(sqrt(d[i])-b[i])/(2*a[i]),x2[i]=(0-sqrt(d[i])-b[i])/(2*a[i]);
cout<<fixed<<setprecision(5)<<"x1="<<x1[i]<<";x2="<<x2[i]<<endl;
}
if(d[i]<0) //???<0???????
{D[i]=0-d[i];
x1[i]=sqrt(D[i])/(2*a[i]);
y[i]=(0-b[i])/(2*a[i]);
cout<<fixed<<setprecision(5)<<"x1="<<y[i]<<"+"<< x1[i]<<"i;x2="<<y[i]<<"-"<<x1[i]<<"i"<<endl;
}}
return 0;
}
|
27
|
13424
|
/*
* 1.cpp
* Created on: 2012-9-28
* Author: ???
* ??:?????????
*/
int main(){
int n;//???????
cin>>n;//?????
while(n--){//??n?????
double a,b,c,d,e,delt=0.0,x1,x2;//????a,b,c,d,e,delt,x1,x2
cin>>a>>b>>c;//???????a,b,c
delt=b*b-4*a*c;//?delt??b*b-4*a*c
if(delt==0){//??delt ??0
x1=x2=(-b)/(2*a);//?x1?x2?????
printf("x1=x2=%.5f\n",x1);//??x1,x2
}
else if(delt<0){//???delt??0??x1,x2???
d=(-b)/(2*a),e=sqrt(4*a*c-b*b)/(2*a);
if (d<=0&&d>-0.000001) d=0.0000001;//??d????d??0.0000001
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",d,e,d,e);//??x1,x2
}
else {//??x1,x2?????
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);//??x1,x2
}
}
}
|
27
|
13425
|
int main()
{
double a,b,c,d,e,f,g,x1,x2;
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
if(d>0)
{
if(b==0)
{
x1=(b+sqrt(d))/(2*a);
x2=(b-sqrt(d))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
}
else if(d==0)
{
x1=(-b)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
if(b==0)
{
e=-d;
f=sqrt(e)/(2*a);
g=(-b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",g,f,g,f);
}
else
{
e=-d;
f=sqrt(e)/(2*a);
g=(-b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",g,f,g,f);
}
}
}
return 0;
}
|
27
|
13426
|
int main()
{
int n; //?? n ?????
double a, b, c, delta, x1, x2; //?? a,b,c,delta,x1,x2 ?????????
cin >> n; //??n
cout << fixed;
for (int i = 1; i <= n; i++)
{
cin >> a >> b >> c; //??a,b,c
delta = b * b - 4 * a * c;
if (delta > 0) //??2??
{
x1 = (-b + sqrt(delta)) / (2 * a); //??x1
x2 = (-b - sqrt(delta)) / (2 * a); //??x2
if (x1 == 0)
{
x1 = 0;
}
if (x2 == 0)
{
x2 = 0;
}
cout << setprecision(5) << "x1=" << x1 << ";x2=" << x2 << endl; //??x1,x2 ??????????
}
else if (delta == 0) //??2????
{
x1 = -b / (2 * a); //??x
if (x1 == 0)
{
x1 = 0;
}
cout << setprecision(5) << "x1=x2=" << x1 <<endl; //??x ??????????
}
else
{
x1 = -b / (2 * a); //????
if (x1 == 0)
{
x1 = 0;
}
x2 = sqrt(-delta) / (2 * a); //???????
cout << setprecision(5) << "x1=" << x1 << "+" << x2 << "i" <<
";x2=" << x1 << "-" << x2 << "i" << endl; //???? ??????????
}
}
return 0;
}
|
27
|
13427
|
/*
* 2.cpp
*
* Created on: 2012-9-29
* Author: 12162
* ????????
*/
int i,n;
double a, b, c,j;
double x[2];
int main()
{
cin>>n;//?????????
for(i=1;i<=n;i++)
{
cin>>a>>b>>c;//????????
if(b==0)//??0???
{b=-b;}
j=b*b-4*a*c;
//???????
if(j>0)
{
x[0] = (-b + sqrt(b*b-4*a*c))/(2*a) ;
x[1] = (-b - sqrt(b*b-4*a*c))/(2*a) ;
cout<<"x1=";
printf("%.5f", x[0]);
cout<<";"<<"x2=";
printf("%.5f", x[1]);
cout<<endl;
}
if(j==0)
{
cout<<"x1=x2=";
printf("%.5f", -b/(2*a));
cout<<endl;
}
if(j<0)
{
cout<<"x1=";
printf("%.5f", -b/(2*a));
cout<<"+";
printf("%.5f",sqrt(4*a*c-b*b)/(2*a));
cout<<"i"<<";"<<"x2=";
printf("%.5f", -b/(2*a));
printf("%.5f",-sqrt(4*a*c-b*b)/(2*a));
cout<<"i";
cout<<endl;
}
}
return 0;
}
|
27
|
13428
|
float a[100],b[100],c[100];
int main()
{
double x1,x2,p,q,s;
int n,i;
cin>>n;
cout<<endl;
for(i=1;i<=n;i++)
{
cin>>a[i]>>b[i]>>c[i];
cout<<endl;
if(b[i]*b[i]-4*a[i]*c[i]>=0)
{
x1=(-b[i]+sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2=(-b[i]-sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
if(x1==x2)
{
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1;
}
if(x1!=x2)
{
cout<<fixed<<setprecision(5)<<"x1="<<x1<<';'<<"x2="<<x2;
}
}
if(b[i]*b[i]-4*a[i]*c[i]<0)
{
p=-b[i]/(2*a[i]);q=sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]);
if(p!=0)
cout<<fixed<<setprecision(5)<<"x1="<<p<<"+"<<q<<"i"<<";"<<"x2="<<p<<-q<<"i";
if(p==0)
cout<<fixed<<setprecision(5)<<"x1=0.00000"<<"+"<<q<<"i"<<";"<<"x2=0.00000"<<-q<<"i";
}
}
return 0;
}
|
27
|
13429
|
double f5(double x)
{
long long y;
if(x>0)
y=(x+0.000005)*100000;
else y=(x-0.000005)*100000;
x=(double)y/100000;
x=x;
return x;
}
int main()
{
int n,i;
scanf("%d",&n);
double a,b,c,delta,p,q,p1,q1,r;
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
delta=b*b-4*a*c;
q=sqrt(fabs(delta));
q1=sqrt(fabs(delta))/(2*a);
p=-b;
p1=-b/(2*a);
r=2*a;
if(q>=0.000005&&delta>0)printf("x1=%.5lf;x2=%.5f\n",f5((p+q)/r),f5((p-q)/r));
else if(delta<0)printf("x1=%.5lf+%.5fi;x2=%.5lf-%.5lfi\n",f5(p1),q1,f5(p1),q1);
else printf("x1=x2=%.5f\n",f5(p1));
}
return 0;
}
|
27
|
13430
|
/****************************
*file:6.cpp
*author:|?
*time:2013-10-9
*description:
*??????????????
*****************************/
int main()
{
int n; //??????n???n?????
cin >> n;
double a[n], b[n], c[n], x[n], y[n]; //???????a,b,c,x,y;?????????????????????x,y?????
double p[n];//???????p????????????
for (int i = 0; i < n; i++)
{
cin >> a[i] >> b[i] >> c[i]; //????
}
for (int i = 0; i < n; i++)
{
p[i] = b[i] * b[i] - 4 * a[i] * c[i]; //p[i]????
x[i] = b[i] / (2 * a[i]); //?????????????x[i]
if (p[i] > 0) //?????0
{
y[i] = sqrt(p[i]) / (2 * a[i]); //????????y[i]
cout << "x1=" << fixed << setprecision(5) << - x[i] + y[i] <<
";x2=" << - x[i] - y[i] << endl; //??????????5???
}
if (p[i] < 0) //?????0
{
y[i] = sqrt(-p[i]) / (2 * a[i]); //??y[i]?????????
if (x[i] == 0) //?????????x[i]?0???????-0????x[i]==0???????????
{
cout << "x1=" << 0.00000 << '+' << abs(y[i]) << 'i' <<
";x2=" << 0.00000 << '-' << abs(y[i]) << 'i' << endl;
} //????????????????5?????????0.00000
else
cout << "x1=" << fixed << setprecision(5) << -x[i] << '+' << abs(y[i])
<< 'i' << ";x2=" << -x[i] << '-' << abs(y[i]) << 'i' << endl;
} //?x[i]??0???????-0????????????????5???
if (p[i] == 0) //?????0???
cout << "x1=x2=" << fixed << setprecision(5) << -x[i] <<endl;//????????????5???
}
return 0;
}
|
27
|
13431
|
int main(void)
{
double a=1.0,b=1.0,c=1.0;
int n=1,k=1;
scanf("%d",&n);
double e[100],f[100],g[100];
for(k=0;k<n;k++)
{
scanf("%lf %lf %lf",&e[k],&f[k],&g[k]);
}
for(k=0;k<n;k++)
{
a=e[k];b=f[k];c=g[k];
if(b*b-4*a*c==0)
printf("x1=x2=%.5lf\n",-b/(2*a));
else if(b*b-4*a*c>0)
printf("x1=%.5lf;x2=%.5lf\n",(-b + sqrt(b*b-4*a*c))/(2*a),(-b - sqrt(b*b-4*a*c))/(2*a));
else if(b*b-4*a*c<0)
{ if(b==0)
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",sqrt(-(b*b-4*a*c))/(2*a),sqrt(-(b*b-4*a*c))/(2*a));
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",-b/(2*a),sqrt(-(b*b-4*a*c))/(2*a),-b/(2*a),-sqrt(-(b*b-4*a*c))/(2*a));
}
}
return 0;
}
|
27
|
13432
|
int main(int argc, char* argv[])
{
int n;
scanf("%d",&n);
double p[10][3];
for(int i=0;i<n;i++){
double a,b,c;
p[i][0]=a;
p[i][1]=b;
p[i][2]=c;
scanf("%lf %lf %lf",&a,&b,&c);
double x1,x2;
if((b*b-4*a*c)>0){
x1=(-b + sqrt(b*b-4*a*c))/(2*a);
x2=(-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if((b*b-4*a*c)==0){
x1=(-b + sqrt(b*b-4*a*c))/(2*a);
x2=(-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else if((b*b-4*a*c)<0){
double d,e;
if(b!=0){
d=-b/(2*a);
}
else if(b==0){
d=b/(2*a);
}
e=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",d,e,d,e);
}
else;
}
return 0;
}
|
27
|
13433
|
int main()
{
int n,i;
double a,b,c,di;
scanf("%d",&n);
for (i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
di=b*b-a*c*4;
if (di<0)
{
di=di*(-1);
if(b/(2*a)<0.000001&&-0.000001<b/(2*a))
{
b=0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",b/(2*a),sqrt(di)/(2*a),b/(2*a),(-1)*sqrt(di)/(2*a));
}
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",(-1)*b/(2*a),sqrt(di)/(2*a),(-1)*b/(2*a),(-1)*sqrt(di)/(2*a));
di=-1;
}
if(di==0)
{
//printf("%lf\n",(abs(b/(2*a))));
if(b/(2*a)<0.000001&&-0.000001<b/(2*a))
{
b=0;
printf("x1=x2=%.5lf\n",b/(2*a));
}
printf("x1=x2=%.5lf\n",(-1)*b/(2*a));
}
if(di>0)
{
if(b/(2*a)<0.000001&&-0.000001<b/(2*a))
{
b=0;
printf("x1=%.5lf;x2=%.5lf\n",b/(2*a)+sqrt(di)/(2*a),b/(2*a)+(-1)*sqrt(di)/(2*a));
}
printf("x1=%.5lf;x2=%.5lf\n",(-1)*b/(2*a)+sqrt(di)/(2*a),(-1)*b/(2*a)+(-1)*sqrt(di)/(2*a));
}
}
}
|
27
|
13434
|
int main()
{
int n;
scanf("%d",&n);
int i;
double a,b,c;
for (i=0;i<n;i++)
{scanf("%lf%lf%lf",&a,&b,&c);
double x1,x2;
if((b*b-4*a*c)>0)
{x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;",x1);
printf("x2=%.5lf\n",x2);}
if((b*b-4*a*c)==0)
{x1=(-b/(2*a));
printf("x1=x2=%.5lf\n",x1);}
if((b*b-4*a*c)<0)
{x1=(sqrt(4*a*c-b*b))/(2*a);
x2=(sqrt(4*a*c-b*b))/(2*a);
printf("x1=%.5lf+%.5lfi;",-b/(2*a),x1);
printf("x2=%.5lf-%.5lfi\n",-b/(2*a),x2);}
}
return 0;
}
|
27
|
13435
|
int main(int argc, char* argv[])
{
int n,i;
double a,b,c,x1,x2,disc,p,q;
scanf("%d", &n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf", &a, &b, &c);
disc=b*b-4*a*c;
if(disc>0)
{
q=sqrt(disc);
x1=((-1)*b+q)/(2*a);
x2=((-1)*b-q)/(2*a);
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if(disc==0)
{
p=(-1)*b/(2*a);
printf("x1=x2=%.5lf\n",p);
}
else if(disc<0)
{
q=sqrt((-1)*disc)/(2*a);
p=(-1)*b/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", p, q, p, q);
}
}
return 0;
}
|
27
|
13436
|
//********************************
//*?? ????????? *****
//*????? 1300012753 *****
//*???2013.10.09 *****
//********************************
int main()
{
int n; // n????????
cin >> n; // ??n
// ????????
for (int i = 1; i <= n; i++)
{
double a, b, c; // a?b?c??????
cin >> a >> b >> c;
double x1, x2, deta; // ??x1 x2???????deta??b^2-4ac
// ?????????
deta = b * b - 4.0 * a * c;
if (deta == 0) // ??deta??0??x1=x2??????
{
x1 = (-b) / (2.0 * a);
if(x1 == -0) // ??x1?????-0????0
{
x1 = 0;
}
printf("x1=x2=%.5lf\n", x1);
}
else if(deta > 0)
{
x1 = (-b + sqrt(deta)) / (2 * a);
x2 = (-b - sqrt(deta)) / (2 * a);
if(x1 == -0)
{
x1 = 0;
}
if(x2 == -0)
{
x2 = 0;
}
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else // ??deta??0???????????
{
double s, x;
s = (-b) / (2.0 * a);
x = (sqrt(-deta)) / (2 * a);
if(s == -0)
{
s = 0;
}
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", s, x, s, x);
}
}
return 0;
}
|
27
|
13437
|
main()
{
int n,q;
scanf("%d",&n);
double p[n][3];
int j;
for(j=0;j<n;j++)
{
scanf("%lf %lf %lf",&p[j][0],&p[j][1],&p[j][2]);
}
for(q=0;q<n;q++)
{
double a,b,c,x1,x2,d,e;
a=p[q][0];b=p[q][1];c=p[q][2];
if(b*b-4*a*c>0)
{x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{if(b*b-4*a*c==0)
{
x1=-b/(2*a);
x2=-b/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
d=0-b/(2*a);
e=(sqrt(4*a*c-b*b))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",d,e,d,e);
}
}
}
}
|
27
|
13438
|
int main()
{
const int max=100;
double a[max],b[max],c[max],x1,x2,delta;
int n,i;
scanf("%d",&n);
for (i=1;i<=n;i++) scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
for (i=1;i<=n;i++)
{
delta=b[i]*b[i]-4*a[i]*c[i];
if (delta>0)
{
x1=(-b[i]+sqrt(delta))/(2*a[i]);
x2=(-b[i]-sqrt(delta))/(2*a[i]);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if (delta==0) printf("x1=x2=%.5f\n",-b[i]/(2*a[i]));
else
{
x1=-b[i]/(2*a[i]);
x2=sqrt(-delta)/(2*a[i]);
if (x2<0) x2=-x2;
if (x1==0) x1=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
}
}
return 0;
}
|
27
|
13439
|
//********************************
//*????????? **
//*????? 1300012848 **
//*???2013.10.10 **
//********************************
int main()
{
int n;
double a,b,c,z;
cin >> n;
for(int i = 1; i <= n; i++)
{
cin >> a >> b >> c;
z = -b / (2 * a);
if (z == -0)
z = 0;
if(b * b - 4 * a * c > 0)
{
cout << "x1=";
printf("%.5f",(-b + sqrt(b * b - 4 * a * c))/(2 * a));
cout << ";x2=";
printf("%.5f",(-b - sqrt(b * b - 4 * a * c)) / (2 * a));
cout << endl;
}
if(b * b - 4 * a * c == 0)
{
cout << "x1=x2=";
printf("%.5f",z);
cout << endl;
}
if(b * b - 4 * a * c < 0)
{
cout << "x1=";
printf("%.5f",z);
cout << "+";
printf("%.5f",sqrt(4 * a * c - b * b)/(2 * a));
cout << "i;x2=";
printf("%.5f",z);
cout << "-";
printf("%.5f",sqrt(4 * a * c - b * b)/(2 * a));
cout << "i" << endl;
}
}
return 0;
}
|
27
|
13440
|
int main()
{
int n,i;
double a,b,c,x1,x2;
cin>>n;
for(i=1;i<=n;i++)
{
cin>>a>>b>>c;
if((b*b-4*a*c)>0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
continue;
}
if((b*b-4*a*c)==0)
{
x1=x2=(-b)/(2*a);
printf("x1=x2=%.5f\n",x1);
continue;
}
if((b*b-4*a*c)<0)
{
x1=(-b)/(2*a);
x2=sqrt(4*a*c-b*b)/(2*a);
if(x1==0)
x1=0;
printf("x1=%.5f""+""%.5fi;x2=%.5f""-""%.5fi\n",x1,x2,x1,x2);
continue;
}
}
return 0;
}
|
27
|
13441
|
int main()
{
double a[100],b[100],c[100],x1[100],x2[100],s[100],x[100];
int n,i;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
if(b[i]*b[i]-4*a[i]*c[i]>0)
{
x1[i]=(-b[i]+sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2[i]=(-b[i]-sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
printf("x1=%.5lf;",x1[i]);
printf("x2=%.5lf\n",x2[i]);
}
else if(b[i]*b[i]-4*a[i]*c[i]==0)
{
x1[i]=x2[i]=-b[i]/(2*a[i]);
printf("x1=x2=%.5lf\n",x1[i]);
}
else
{s[i]= -b[i]/(2*a[i]);
x[i]=sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]);
printf("x1=%.5lf+%.5lfi;",s[i],x[i]);
printf("x2=%.5lf-%.5lfi\n",s[i],x[i]);
}
}
return 0;
}
|
27
|
13442
|
int main()
{
int n;
int i;
cin>>n;
double a,b,c;
for(i=1;i<=n;i++)
{
cin>>a>>b>>c;
if(b*b-4*a*c>=0)
{
double x1,x2;
x1 = (-b+sqrt(b*b-4*a*c))/(2*a);
x2 = (-b-sqrt(b*b-4*a*c))/(2*a);
if(x1 == x2) printf("x1=x2=%.5f\n", x1);
else printf("x1=%.5f;x2=%.5f\n" ,x1,x2);
}
else
{
double x11,x12,x21,x22;
x11=(-b)/(2*a);
x12=+sqrt(-b*b+4*a*c)/(2*a);
x21=(-b)/(2*a);
x22=-sqrt(-b*b+4*a*c)/(2*a);
if(b==0) printf("x1=0.00000+%.5fi;x2=0.00000%.5fi\n",x12,x22);
else printf("x1=%.5f+%.5fi;x2=%.5f%.5fi\n",x11,x12,x21,x22);
}
}
return 0;
}
|
27
|
13443
|
int main()
{
int n,i;
double a,b,c,e,d;
scanf("%d\n",&n);
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
e=b*b-4*a*c;
d=(-b/(2*a));
if(e>0)
printf("x1=%.5lf;x2=%.5lf\n",d+sqrt(e)/(2*a),d-sqrt(e)/(2*a));
else if(e==0)
printf("x1=x2=%.5lf\n",d);
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",d,sqrt(-e)/(2*a),d,sqrt(-e)/(2*a));
}
return 0;
}
|
27
|
13444
|
main()
{
int j,n;
double q[100],w[100],e[100],a,b,c,p,x1,x2,h,g;
scanf("%d",&n);
for(j=0;j<=n-1;j++)
{
scanf("%lf %lf %lf",&q[j],&w[j],&e[j]);
}
for(j=0;j<=n-1;j++)
{
a=q[j];
b=w[j];
c=e[j];
p=b*b-4*a*c;
if (p>0)
{
if(b!=0)
{
x1=(-b+sqrt(p))/(2*a);
x2=(-b-sqrt(p))/(2*a);
printf("x1=%.5lf;x2=%.5lf",x1,x2);
printf("\n");
}
else
printf("x1=%.5lf;x2=-%.5lf",sqrt(p)/(2*a),sqrt(p)/(2*a));
}
else
if (p==0)
{
if(b!=0)
{
x1=x2=-b/(2*a);
printf("x1=x2=%.5lf",x2);
}
else
printf("x1=x2=0.00000");
printf("\n");
}
else
{
if(b!=0)
{
h=-b/(2*a);
g=(sqrt(-p))/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi",h,g,h,g);
}
else
{
g=(sqrt(-p))/(2*a);
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi",g,g);
}
printf("\n");
}
}
getchar();
getchar();
}
|
27
|
13445
|
int file0()
{float a,b,c;
scanf("%f%f%f",&a,&b,&c);
double x1,x2,p,e,f;
a=4*a;
b=4*b;
c=4*c;
p=b*b-4*a*c;
if(p>0)
{ x1=(-b+sqrt(p))/(2*a);
x2=(-b-sqrt(p))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(p==0)
{
x1=x2=(-b+sqrt(p))/2*a;
printf("x1=x2=%.5f\n",x1);
}
else if(p<0)
{
e=-b/(2*a);
f=sqrt(-p)/(2*a);
if(e==-0)
e=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,f,e,f);
}
}
main()
{
int n,r;
scanf("%d",&n);
r=0;
for(r=0;r<=n;r++)
{ if(r<n)
file0();
}
return 0;
}
|
27
|
13446
|
int main(int argc, char* argv[])
{
int n;
scanf("%d",&n);
int i=0;
do{
double a,b,c;
scanf("%lf%lf%lf",&a,&b,&c);
double x1,x2;
if(b*b-4*a*c>0)
{{if(b!=0)
{x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5f\n",x1,x2);}}
{if(b==0)
{x1 = (b + sqrt(b*b-4*a*c))/(2*a);
x2 = (b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5f\n",x1,x2);}}}
if(b*b-4*a*c==0)
{{if(b!=0)
{x1=x2=(-b + sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n",x1);}}
{if(b==0)
{x1=x2=(-b + sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n",x1);}}}
if(b*b-4*a*c<0)
{{if(b!=0)
{double e,f;
e=sqrt(4*a*c-b*b)/(2*a);
f=sqrt(4*a*c-b*b)/(2*a);
x1=-b/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,e,x1,f);}}
{if(b==0)
{double e,f;
e=sqrt(4*a*c-b*b)/(2*a);
f=sqrt(4*a*c-b*b)/(2*a);
x1=b/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,e,x1,f);}}}
i++;
}while(i<n);
return 0;
}
|
27
|
13447
|
int main()
{
double a[100],b[100],c[100],d,e,f;
int n,i;
scanf("%d", &n);
for(i=1;i<=n;i++){scanf("%lf%lf%lf", &a[i],&b[i],&c[i]);}
for(i=1;i<=n;i++){
d=b[i]*b[i]-4*a[i]*c[i];
e=-b[i]/(2*a[i]);
if(e==0){e=0.00000;}
f=sqrt(fabs(d))/(2*a[i]);
if(d==0){printf("x1=x2=%.5lf", e);}
if(d>0){printf("x1=%.5lf;x2=%.5lf", (e+f),(e-f));}
if(d<0){printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi", e, f, e, f);}
if(i<n){printf("\n");}
}
return 0;
}
|
27
|
13448
|
int main(int argc, char* argv[])
{
int i,j;
double a,b,c;
double m,n,x1,x2,d;
scanf("%d",&j);
for(i=0;i<j;i++){
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
if (d==0){
m=-b/(2*a);
n=sqrt(d);
x1=x2=m;
printf("x1=x2=%.5lf\n",m);
}
else if (d>0){
m=-b/(2*a);
n=sqrt(d)/(2*a);
x1=m+n;
x2=m-n;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else{
m=-b/(2*a);
n=sqrt(-b*b+4*a*c)/(2*a);
printf("x1=%.5lf+%.5lfi;",m,n);
printf("x2=%.5lf-%.5lfi\n",m,n);
}
}
return 0;
}
|
27
|
13449
|
main()
{
int n,l;
scanf("%d",&n);
double a[100][5],b[100][6];
for(l=0;l<=n-1;l++)
{
scanf("%lf %lf %lf",&a[l][0],&a[l][1],&a[l][2]);
a[l][3]=a[l][1]*a[l][1]-4*a[l][0]*a[l][2];
if(a[l][3]>0)
{
b[l][0]=(-a[l][1] + sqrt(a[l][1]*a[l][1]-4*a[l][0]*a[l][2]))/(2*a[l][0]) ;
b[l][1]=(-a[l][1] - sqrt(a[l][1]*a[l][1]-4*a[l][0]*a[l][2]))/(2*a[l][0]) ;
}
else
{
if(a[l][3]==0)
{
b[l][0]=-a[l][1]/(2*a[l][0]);
}
else
{
b[l][0]=-a[l][1]/(2*a[l][0]);
if(b[l][0]==0)
{b[l][0]=0;}
b[l][1]=(sqrt(4*a[l][0]*a[l][2]-a[l][1]*a[l][1]))/(2*a[l][0]);
}
}
}
for(l=0;l<=n-1;l++)
{
if(a[l][3]>0)
{
printf("x1=%.5lf;x2=%.5lf\n",b[l][0], b[l][1]);
}
else
{
if(a[l][3]==0)
{
printf("x1=x2=%.5lf\n", b[l][0]);
}
else
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",b[l][0], b[l][1], b[l][0],b[l][1]);
}
}
}
getchar();
getchar();
}
|
27
|
13450
|
int main()
{
int n=0,i=0;
cin>>n;
for(i=1;i<=n;i++)
{double a,b,c,d;
cin>>a>>b>>c;
d=b*b-4*a*c;
if(d==0)
{
if(b!=0)cout<<fixed<<setprecision(5)<<"x1=x2="<<(-b/(2*a))<<endl;
if(b==0)cout<<fixed<<setprecision(5)<<"x1=x2="<<b<<endl;
}
else if(d>0)
{
if(b!=0)cout<<fixed<<setprecision(5)<<"x1="<<(-b+sqrt(d))/(2*a)<<';'<<"x2="<<(-b-sqrt(d))/(2*a)<<endl;
if(b==0)cout<<fixed<<setprecision(5)<<"x1="<<sqrt(d)/(2*a)<<';'<<"x2="<<-sqrt(d)/(2*a)<<endl;
}
else if(d<0)
{
if(b!=0)cout<<fixed<<setprecision(5)<<"x1="<<(-b)/(2*a)<<'+'<<sqrt(-d)/(2*a)<<'i'<<';'<<"x2="<<(-b)/(2*a)<<'-'<<sqrt(-d)/(2*a)<<'i'<<endl;
if(b==0)cout<<fixed<<setprecision(5)<<"x1="<<b<<'+'<<sqrt(-d)/(2*a)<<'i'<<';'<<"x2="<<b<<-sqrt(-d)/(2*a)<<'i'<<endl;
}
}
return 0;
}
|
27
|
13451
|
int main(void)
{
int repeat, ri;
double a, b, c, d;
scanf("%d", &repeat);
for(ri = 1; ri <= repeat; ri++)
{
scanf("%lf %lf %lf", &a, &b, &c);
d=b*b-4*a*c;
if (d>0)
{
printf("x1=%.5f;", (-b+sqrt(d))/(2*a));
printf("x2=%.5f\n", (-b-sqrt(d))/(2*a));
}
else if (d<0)
{
if (b==0)
{
printf("x1=0.00000+%0.5fi;", sqrt(-d)/(2*a));
printf("x2=0.00000-%0.5fi\n", sqrt(-d)/(2*a));
}
else
{
printf("x1=%.5f+%0.5fi;", -b/(2*a), sqrt(-d)/(2*a));
printf("x2=%.5f-%0.5fi\n", -b/(2*a), sqrt(-d)/(2*a));
}
}
else printf("x1=x2=%.5f\n", -b/(2*a));
}
return(0);
}
|
27
|
13452
|
int main()
{
int n,m;
double a,b,c,x,y,p,q,disc;
scanf("%d",&n);
for(m=1;m<=n;m++)
{
scanf("%lf %lf %lf",&a,&b,&c);
disc=b*b-4*a*c;
p=-b;
p=p/2;
p=p/a;
if (disc>0)
{
q=sqrt(disc);
q=q/2.0;
q=q/a;
x=p+q;y=p-q;
printf("x1=%.5f;x2=%.5f",x,y);
printf("\n");
}
else if (disc==0)
{
printf("x1=x2=%.5f",p);
printf("\n");
}
else
{
disc=-disc;
q=sqrt(disc);
q=q/2.0;
q=q/a;
if(p==-0) p=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi",p,q,p,q);
printf("\n");
}
}
return 0;
}
|
27
|
13453
|
void main()
{
double x1[32768],x2[32768],xi[32768],a,b,c,t;
int n,i;
scanf("%d",&n);
for (i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
t=b*b-4*a*c;
if (t>=0)
{
x1[i]=(-b+sqrt(t))/(2*a);
x2[i]=(-b-sqrt(t))/(2*a);
if(fabs(x1[i])<1e-6) x1[i]=0;
if(fabs(x2[i])<1e-6) x2[i]=0;
}
else if(t<0)
{
x1[i]=x2[i]=-b/(2*a);
if(fabs(x1[i])<1e-6) x1[i]=x2[i]=0;
xi[i]=sqrt(-t)/(2*a);
}
}
for (i=1;i<=n;i++)
{
if(fabs(xi[i])<=1e-6)
{
if(x1[i]==x2[i]) printf("x1=x2=%.5f\n",x1[i],x2[i]);
else printf("x1=%.5f;x2=%.5f\n",x1[i],x2[i]);
}
else printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1[i],xi[i],x2[i],xi[i]);
}
}
|
27
|
13454
|
int main() {
int n;
cin >> n;
double a, b, c, x1, x2;
while (n--) {
cin >> a >> b >> c;
if ((b * b - 4 * a * c) > 0) {
x1 = (0 - b) / (2 * a);
x2 = (sqrt(b * b - 4 * a * c)) / (2 * a);
printf("x1=%.5f;x2=%.5f\n", x1 + x2, x1 - x2);
} else if ((b * b - 4 * a * c) < 0) {
x1 = (0 - b) / (2 * a);
if (x1 == 0)
x1 = 0;
x2 = (sqrt(4 * a * c - b * b)) / (2 * a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", x1, x2, x1, x2);
} else {
printf("x1=x2=%.5f\n", (0 - b) / (2 * a));
}
}
return 0;
}
|
27
|
13455
|
int main()
{
int n;
double d[20];/*????????*/
double e[20];
double f[20];
scanf("%d",&n);
int s,t;
double a,b,c,x1,x2,y,z;
for (s=1;s<=n;s++)
scanf("%lf %lf %lf",&d[s],&e[s],&f[s]);
for(t=1;t<=n;t++)
{
a=d[t];/*?????????*/
b=e[t];
c=f[t];
if(b*b-4*a*c>=0)
{
if(b*b-4*a*c>0)
{
x1=(-b + sqrt(b*b-4*a*c))/(2*a);
x2=(-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
x1=(-b)/(2*a);
x2=(-b)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
}
else
{
y=(-b)/(2*a);
z=sqrt(4*a*c-b*b)/(2*a);
if (fabs(y)<0.00001) y=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",y,z,y,z);
}
}
getchar();
getchar();
return 0;
}
|
27
|
13456
|
int main(int argc, char* argv[])
{
int n;
scanf("%d",&n);
int m;
double a,b,c,x1,x2,dt,xubu,shibu;
for (m=1;m<n+1;m++)
{
scanf("%lf""%lf""%lf",&a,&b,&c);
dt=b*b-4*a*c;
if (dt>0)
{
x1=(-b+sqrt(dt))/(a*2);
x2=(-b-sqrt(dt))/(a*2);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if (dt==0)
{
x1=(-b)/(a*2);
printf("x1=x2=%.5lf\n",x1);
}
else if (dt<0)
{
xubu=(sqrt(-dt))/(2*a);
shibu=(-b)/(a*2);
if(shibu==0)
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-shibu,xubu,-shibu,xubu);
}
else if(shibu==-0)
{printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-shibu,xubu,-shibu,xubu);}
else
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",shibu,xubu,shibu,xubu);}
}
}
return 0;
}
|
27
|
13457
|
int main ()
{
double a,b,c,d,e,q,x1,x2;
int n,i=0;
scanf("%d",&n);
while(i<n)
{scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
if(d>0)
{x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
if(d==0)
{x1=-b/(2*a);
printf("x1=x2=%.5f\n",x1);}
if(d<0)
{e=(sqrt(-d))/(2*a);
if(b!=0)
{q=(-b)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",q,e,q,e);}
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b,e,b,e);}
i=i+1;
}
return 0;
}
|
27
|
13458
|
void main()
{
int n,i=1;
double a[100],b[100],c[100],x1,x2,realpart,imagpart,disc;
scanf("%d",&n);
while (i<=n)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
i+=1;
}
i=1;
while (i<=n)
{
disc=b[i]*b[i]-4*a[i]*c[i];
if (disc>0)
{
x1=(-b[i] + sqrt(disc))/(2*a[i]) , x2=(-b[i] - sqrt(disc))/(2*a[i]);
if ( fabs(x1)<1e-5) x1=0;
if ( fabs(x2)<1e-5) x2=0;
printf ("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
if (disc==0)
{
x1=(-b[i])/(2*a[i]);
if(fabs(x1)<1e-5) x1=0;
printf ("x1=x2=%.5f\n",x1);
}
else
{
realpart=(-b[i])/(2*a[i]);
imagpart=sqrt(-disc)/(2*a[i]);
if ( fabs(realpart)<1e-5) realpart=0;
if ( fabs(imagpart)<1e-5) imagpart=0;
printf ("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", realpart,imagpart, realpart,imagpart);
}
}
i+=1;
}
}
|
27
|
13459
|
int main()
{
int n,i,k;
double s,t,m;
scanf("%d",&n);
double a[100];
for(i=0;i<3*n;i++)
scanf("%lf",&a[i]);
for(k=0;k<3*n;k++)
{
if(k%3==0)
{
m=a[k+1]*a[k+1]-4*a[k]*a[k+2];
if(m>0)
{
s=(-a[k+1]+sqrt(m))/(2*a[k]);
t=(-a[k+1]-sqrt(m))/(2*a[k]);
printf("x1=%.5lf;x2=%.5lf\n",s,t);
}
if(m==0)
{
s=(-a[k+1])/(2*a[k]);
printf("x1=x2=%.5lf\n",s);
}
if(m<0)
{
s=(-a[k+1])/(2*a[k]);
t=(sqrt(-m))/(2*a[k]);
if(s==0)
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",t,t);
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",s,t,s,t);
}
}
else continue;
}
return 0;
}
|
27
|
13460
|
int main()
{
int n,i;
double a,b,c,x1,x2,x,y;
cin>>n;
for(i=1;i<=n;i++)
{ cin>>a>>b>>c;
float m;
m=b*b-4*a*c;
if(m==0)
{ x=-b/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x<<endl;
}
else
{ if (m>0)
{x1=(-b+sqrt(m))/(2*a);
x2=(-b-sqrt(m))/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
else
{if(b==0){x=b/(2*a);
y=sqrt(-m)/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x<<"+"<<y<<"i;x2="<<x<<"-"<<y<<"i"<<endl;
}
else{x=-b/(2*a);
y=sqrt(-m)/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x<<"+"<<y<<"i;x2="<<x<<"-"<<y<<"i"<<endl;
}
}
}
}
return 0;}
|
27
|
13461
|
main()
{
int n,i;
float a,b,c;
double x1,x2;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%f %f %f ",&a,&b,&c);
if(b*b-4*a*c>0)
{
x1=(double )(0-b+sqrt(b*b-4*a*c))/(2*a);
x2=(double )(0-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(b*b-4*a*c==0)
{
x1=x2=(double )(0-b)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
if(b*b-4*a*c<0)
{
x1=(double )(sqrt(4*a*c-b*b))/(2*a);
x2=(double )(0-b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x2,x1,x2,x1);
}
}
}
|
27
|
13462
|
int main()
{
int n,i;
double a,b,c;
double s,t,m,k,u;
scanf("%d",&n);
for(i=1;i<=n;i++)
{scanf("%lf%lf%lf",&a,&b,&c);
if(b*b-4*a*c>0)
{s=-(b/(2*a))+sqrt(b*b-4*a*c)/(2*a);
t=-(b/(2*a))-sqrt(b*b-4*a*c)/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",s,t);
}
else if(b*b-4*a*c==0)
{
k=(-b)/(2*a);
printf("x1=x2=%.5lf\n",k);
}
else
{m=-b/(2*a);
u=sqrt(-(b*b-4*a*c))/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,u,m,u);}
}
return 0;
}
|
27
|
13463
|
int main()
{
int n,i;
double a,b,c,d,m,k;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
if(d==0)
{
m=-b/2/a;
printf("x1=x2=%.5lf\n",m);
}
else if(d>0)
{
m = (-b + sqrt(b*b-4*a*c))/(2*a);
k = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",m,k);
}
else
{
m=-b/2/a;
k=sqrt(-d)/2/a;
if(m==0)m=0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,k,m,k);
}
}
return 0;
}
|
27
|
13464
|
int main()
{
double a,b,c;
double x1,x2,delta;
double root;
int n,i;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
delta=b*b-4*a*c;
if(delta<0)
{
delta=-delta;
root=(-b)/(2*a);
if(root==0) root=-root;
printf("x1=%.5f",root);
printf("+");
printf("%.5f",sqrt(delta)/(2*a));
printf("i");
printf(";");
printf("x2=%.5f",root);
printf("-");
printf("%.5f",sqrt(delta)/(2*a));
printf("i");
printf("\n");
}
else
{
x1=(-b+sqrt(delta))/(2*a);
x2=(-b-sqrt(delta))/(2*a);
if(x1==x2)
{
printf("x1=x2=%.5f",x1);
printf("\n");
}
else
{
printf("x1=%.5f",x1);
printf(";");
printf("x2=%.5f",x2);
printf("\n");
}
}
}
return 0;
}
|
27
|
13465
|
int main()
{
float a,b,c,d,p,q;
double x1,x2;
int i,n,k;
scanf("%d",&n);
for (i=1;i<=n;++i)
{
scanf("%f%f%f",&a,&b,&c);
d=sqrt(b*b-4*a*c);
if(d>0)
{
x1 = (-b + d)/(2*a);
x2 = (-b - d)/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(d==0)
{
x1 = (-b + d)/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
d=sqrt(4*a*c-b*b);
if(b==0)
{
x1=b/(2*a);
x2=b/(2*a);
p=d/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,p,x2,p);
}
else
{
x1=(-b)/(2*a);
x2=(-b)/(2*a);
p=d/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,p,x2,p);
}
}
}
scanf("%d",&k);
return(0);
}
|
27
|
13466
|
int main()
{
int n,i;
double u[100],s[100],delta[100],x1[100],x2[100],a[100],b[100],c[100];
scanf("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
}
for (i=0;i<n;i++)
{
delta[i]=pow(b[i],2)-4*a[i]*c[i];
if(delta[i]>0)
{
x1[i]=((0-b[i])+sqrt(delta[i]))/(2*a[i]);
x2[i]=((0-b[i])-sqrt(delta[i]))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1[i],x2[i]);
}
else if(delta[i]==0)
{
x1[i]=(0-b[i])/(2*a[i]);
printf("x1=x2=%.5lf\n",x1[i]);
}
else if(delta[i]<0)
{
u[i]=(0-b[i])/(2*a[i]);
s[i]=sqrt(0-delta[i])/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",u[i],s[i],u[i],s[i]);
}
}
return 0;
}
|
27
|
13467
|
int main()
{
int n;
cin>>n;
double a,b,c;
for(int i=1;i<=n;i++)
{
cin>>a>>b>>c;
double d=b*b-4*a*c;
if(d>0)
{
double x1=(-b + sqrt(d))/(2*a);
double x2=(-b - sqrt(d))/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
if(d==0)
{
double x=(-b)/(2*a);
cout<<"x1=x2="<<fixed<<setprecision(5)<<x<<endl;
}
if(d<0)
{
double m;
if(b==0)m=0;
if(b!=0)m=(-b)/(2*a);
double n=(sqrt(-d))/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<m<<"+"<<n<<"i;x2="<<m<<"-"<<n<<"i"<<endl;
}
}
return 0;
}
|
27
|
13468
|
int main(int argc, char *argv[])
{
double a[100][3],delta,x1,x2,real1,real2,imz1,imz2;
int n,i,j;
scanf("%d",&n);
for (i=0;i<=n-1;i++)
{
for (j=0;j<=2;j++)
{
scanf("%lf",&a[i][j]);
}
delta=a[i][1]*a[i][1]-4*a[i][0]*a[i][2];
if (delta>0)
{x1=((-1)*a[i][1]+sqrt(delta))/(2*a[i][0]);
x2=((-1)*a[i][1]-sqrt(delta))/(2*a[i][0]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);}
else if (fabs(delta)<1e-5)
{x1=((-1)*a[i][1])/(2*a[i][0]);
printf("x1=x2=%.5lf\n",x1);}
else
{real1=(-1)*a[i][1]/(2*a[i][0]);
imz1=sqrt((-1)*delta)/(2*a[i][0]);
real2=(-1)*a[i][1]/(2*a[i][0]);
imz2=sqrt((-1)*delta)/(2*a[i][0]);
if (fabs(real1)<1e-5)
real1=fabs(real1);
if (fabs(real2)<1e-5)
real2=fabs(real2);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",real1,imz1,real2,imz2);}
}
return 0;
}
|
27
|
13469
|
void main()
{
int i,n;
double a,b,c;
double d,x1,x2;
scanf("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
if (d>0)
{
x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if (d==0)
{
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
if (d<0)
{
double t;
t=sqrt(-d);
printf("x1=-%.5lf+%.5lfi;x2=-%.5lf-%.5lfi\n",b/(2*a),t/(2*a),b/(2*a),t/(2*a));
}
}
}
|
27
|
13470
|
int main()
{
int n, i;
double a, b, c, dt;
scanf("%d", &n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf", &a, &b, &c);
dt=b*b-4*a*c;
if(dt>0)
{
printf("x1=%.5f;x2=%.5f\n", (-b+sqrt(dt))/(2*a), (-b-sqrt(dt))/(2*a));
}
else if(dt==0)
{
if(b==0)
{
printf("x1=x2=0\n");
}
else
{
printf("x1=x2=%.5f\n", -b/(2*a));
}
}
else
{
dt=-dt;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", -b/(2*a), sqrt(dt)/(2*a), -b/(2*a), sqrt(dt)/(2*a));
}
}
return 0;
}
|
27
|
13471
|
//****************************************
//*?? ????????? **
//*?????? 1100013020 **
//*???2011.9.23 **
//****************************************
int main()
{
int i,n,j;
double a[100],b[100],c[100],x1[100],x2[100],k[100],l[100],p[100]; //???????????
i=1;
j=1;
cin>>n;
for (;i<=n;)
{
cin>>a[i]>>b[i]>>c[i];
if (b[i]*b[i]-4*a[i]*c[i]>=0)
{
x1[i]=(-b[i]+sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2[i]=(-b[i]-sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
if (x1[i]<0 || x1[i]>0)
x1[i]=x1[i];
else
x1[i]=0.00000;
if (x2[i]<0 || x2[i]>0)
x2[i]=x2[i];
else
x2[i]=0.00000;
}
else
{
k[i]=-b[i]/(2*a[i]);
l[i]=sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
p[i]=i;
if (k[i]<0 || k[i]>0)
k[i]=k[i];
else
k[i]=0.00000;
if (l[i]<0 || l[i]>0)
l[i]=l[i];
else
l[i]=0.00000;
}
i=i+1;
}
i=1;
for (;i<=n;)
{
if (i<p[i] || i>p[i])
{
if (x1[i]<x2[i]||x1[i]>x2[i])
{
cout<<fixed<<setprecision(5)<<"x1="<<x1[i]<<";x2="<<x2[i]<<endl;
}
else
{
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1[i]<<endl;
}
}
else
{
cout<<fixed<<setprecision(5)<<"x1="<<k[i]<<"+"<<l[i]<<"i"<<";x2="<<k[i]<<"-"<<l[i]<<"i"<<endl;
j=j+1;
}
i=i+1;
}
return 0;
}
|
27
|
13472
|
int main()
{
int x,n;
double a,b,c,x1,x2,disc,p,q;
double w[99][3];
scanf("%d\n",&n);
for(x=0;x<n;x++)
{
scanf("%lf %lf %lf\n",&a,&b,&c);
w[x][0]=a;
w[x][1]=b;
w[x][2]=c;
}
for(x=0;x<n;x++)
{
a=w[x][0];
b=w[x][1];
c=w[x][2];
disc=b*b-4*a*c;
if(fabs(disc)<1e-6)
printf("x1=x2=%.5f\n",-b/2/a);
else
if(disc>1e-6)
{
x1=(-b+sqrt(disc))/2/a;
x2=(-b-sqrt(disc))/2/a;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
if(disc<-(1e-6))
{
p=-b/2/a;
q=sqrt(-disc)/2/a;
if(fabs(b)<1e-6) p=fabs(p);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,q,p,q);
}
}
}
|
27
|
13473
|
int main(){
int n;
scanf("%d",&n);
int i;
for(i=0;i<n;i++){
float a,b,c;
scanf("%f %f %f",&a,&b,&c);
if(b*b-4*a*c>=0){
if((-b+sqrt(b*b-4*a*c))/(2*a)==(-b-sqrt(b*b-4*a*c))/(2*a)){
printf("x1=x2=%.5lf\n",(-b+sqrt(b*b-4*a*c))/(2*a));
}
else {printf("x1=%.5lf;x2=%.5lf\n",(-b+sqrt(b*b-4*a*c))/(2*a),(-b-sqrt(b*b-4*a*c))/(2*a));
}
}
else{
if(b==0)b=-b;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-b/(2*a),sqrt(-b*b+4*a*c)/(2*a),-b/(2*a),sqrt(-b*b+4*a*c)/(2*a));
}
}
return 0;
}
|
27
|
13474
|
int main()
{
int n;
double a,b,c,x1,x2,r1,r2,i1;
cin>>n;
while(n--)
{
cin>>a>>b>>c;
if(b*b-4*a*c>0)
{
r1=(-b + sqrt(b*b-4*a*c))/(2*a);
r2=(-b - sqrt(b*b-4*a*c))/(2*a);
x1=r1>r2?r1:r2;
x2=r1<r2?r1:r2;
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";x2="<<x2<<endl;
}
else if(b*b-4*a*c<0)
{
i1=sqrt(-b*b+4*a*c)/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<-b/(2*a)<<"+"<<fabs(i1)
<<"i;x2="<<-b/(2*a)<<"-"<<fabs(i1)<<"i"<<endl;
}
else
{
x1=-b/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
}
return 0;
}
|
27
|
13475
|
main()
{
int n,i;
double a,b,c,x1,x2;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
if ((b*b-4*a*c)>0)
{x1 = (-b + sqrt(b*b-4*a*c))/(2*a) ;
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);}
else if ((b*b-4*a*c)==0)
{x1=x2=(-b + sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n",x1);}
else if ((b*b-4*a*c)<0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",0-b/(2*a),sqrt(4*a*c-b*b)/(2*a),0-b/(2*a),sqrt(4*a*c-b*b)/(2*a));
}
}
|
27
|
13476
|
int main()
{
int n,i;
double a,b,c,x1,x2,d,r;
cin >>n;
for (i=1;i<=n;i++)
{
cin >>a>>b>>c;
d=b*b-4*a*c;
if (d>0)
{
x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
cout <<"x1=";
printf("%.5f",x1);
cout <<";x2=";
printf("%.5f",x2);
cout <<endl;
}
else if (d<0)
{
r=-b/(2*a);
d=abs(d);
x1=sqrt(d)/(2*a);
cout <<"x1=";
if (r==0)
cout <<"0.00000";
else
printf("%.5f",r);
cout <<"+";
printf("%.5f",x1);
cout <<"i;x2=";
if (r==0)
cout <<"0.00000";
else
printf("%.5f",r);
cout <<"-";
printf("%.5f",x1);
cout <<"i"<<endl;
}
else
{
x1=-b/(2*a);
cout <<"x1=x2=";
printf("%.5f",x1);
cout <<endl;
}
}
return 0;
}
|
27
|
13477
|
main()
{int n,m;
double p,q,t,x1,x2;
float b[1005],a[1005];
scanf("%d",&n);
for (m=0;m<3*n;m=m+3)
{
scanf("%f %f %f",&b[m],&b[m+1],&b[m+2]);
a[m]=b[m];
a[m+1]=b[m+1];
a[m+2]=b[m+2];
}
for(m=0;m<=3*n-1;m=m+3)
{
t=a[m+1]*a[m+1]-4*a[m]*a[m+2];
if (t>=0)
if(t==0)
{
p=-1*a[m+1]/(2*a[m]);
if(p==-0.0) p=0.0;
printf("x1=x2=%.5lf\n",p);
}
else {p=-1*a[m+1]/(2*a[m]);
q=sqrt(t)/(2*a[m]);
x1=p+q;
x2=p-q;
if(x1==-0.0) x1=0.0;
if(x2==-0.0) x2=0.0;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
p=-1*a[m+1]/(2*a[m]);
q=sqrt(-t)/(2*a[m]);
if(p==-0.0) p=0.0;
if(q==-0.0) q=0.0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
}
|
27
|
13478
|
int main()
{
int n,i;
double a[100],b[100],c[100], det,t,x,y;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a[i-1],&b[i-1],&c[i-1]);
}
for(i=1;i<=n;i++)
{
det=b[i-1]*b[i-1]-4*a[i-1]*c[i-1];
t=-b[i-1]/(2*a[i-1]);
x=sqrt(det)/(2*a[i-1]);
y=sqrt(-det)/(2*a[i-1]);
if(det<0)
{
if(t!=0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",t,y,t,y);
else printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-t,y,-t,y);
}
else if(det>0)
printf("x1=%.5lf;x2=%.5lf\n",x+t,t-x);
else
printf("x1=x2=%.5lf\n",t);
}
}
|
27
|
13479
|
double dt(double a,double b,double c)
{
return(b*b-4*a*c);
}
double ba(double a,double b)
{
return(-b/(2*a));
}
double gdt(double a,double dtt)
{
return(sqrt(dtt)/(2*a));
}
double yu(double a,double b,double c)
{
return(sqrt(fabs(-dt(a,b,c)/(4*a))));
}
void main()
{
int n;
double a,b,c;
scanf("%d",&n);
int i;
double d;
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
if(ba(a,b)<1e-25&&ba(a,b)>-1e-25)
d=0.0;
else
d=ba(a,b);
if(dt(a,b,c)==0)
printf("x1=x2=%.5lf\n",d);
else if(dt(a,b,c)>0)
printf("x1=%.5lf;x2=%.5lf\n",d+gdt(a,dt(a,b,c)),d-gdt(a,dt(a,b,c)));
else if(dt(a,b,c)<0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",d,yu(a,b,c)/sqrt(a),d,yu(a,b,c)/sqrt(a));
}
}
|
27
|
13480
|
int main ()
{
int n,i;
float a,b,c;
double x1,x2;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%f %f %f",&a,&b,&c);
if((b*b-4*a*c)>0)
{
x1=((-1)*b+sqrt(b*b-4*a*c))/(2*a);
x2=((-1)*b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
if((b*b-4*a*c)==0)
{
x1=((-1)*b+sqrt(b*b-4*a*c))/(2*a);
x2=((-1)*b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
if((b*b-4*a*c)<0)
{
x1=(-1*b)/(2*a);
x2=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
}
}
return 0;
}
|
27
|
13481
|
int main()
{
double a, b, c,d,g,x1,x2;
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d=(-b)/(2*a) ;
g=(sqrt(fabs(4*a*c-b*b)))/(2*a);
if((b*b-4*a*c)>0)
{
x1=d+g;
x2=d-g;
printf("x1=%.5lf;",x1);
printf("x2=%.5lf\n",x2);
}
else if((b*b-4*a*c)==0)
{
x1=x2=d;
printf("x1=x2=%.5lf\n",d);
}
else if((4*a*c-b*b)>0)
{
printf("x1=%.5lf+%.5lfi;",d,g);
printf("x2=%.5lf-%.5lfi\n",d,g);
}
}
return 0;
}
|
27
|
13482
|
//********************************
//*???????????? **
//*????? 1300012707 **
//*???2013.10.9 **
//********************************
int main()
{
double a, b, c, r1, r2, x1, x2;
int n;
cin >> n;
for ( int i = 1; i <= n; i = i + 1)
{
cin >> a >> b >> c;
if ( b == 0)
{
b = -b;
}
if ( ( b * b - 4 * a * c) > 0)
{
x1 = ( -b + sqrt(b * b - 4 * a * c)) / ( 2 * a);
x2 = ( -b - sqrt(b * b - 4 * a * c)) / ( 2 * a);
cout << "x1=";
printf("%.5f", x1);
cout << ";x2=";
printf("%.5f", x2);
cout << endl;
}
else
{
if ( ( b * b - 4 * a * c) < 0)
{
r1 = -b / ( 2 * a);
r2 = sqrt(4 * a * c - b * b) / ( 2 * a);
cout << "x1=";
printf("%.5f", r1);
cout << "+";
printf("%.5f", r2);
cout << "i;x2=";
printf("%.5f", r1);
cout << "-";
printf("%.5f", r2);
cout << "i" << endl;
}
else
{
r1 = -b / ( 2 * a);
cout << "x1=x2=";
printf("%.5f", r1);
cout << endl;
}
}
}
return 0;
}
|
27
|
13483
|
int main()
{
int n,i;
double a,b,c,x1,x2,G,y;
scanf("%d\n",&n);
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf\n",&a,&b,&c);
G=b*b-4*a*c;
if (G>0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
if(x1==0){
x1=0-x1;
}
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
if(x2==0){
x2=0-x2;
}
if (x1==x2) printf("x1=x2=%.5lf\n",x1,x2);
else printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
x1=(-b)/(2*a);
if(x1==0){
x1=0-x1;
}
y=(-sqrt(-b*b+4*a*c))/(2*a);
if (y==0) printf("x1=x2=%.5lf\n",x1,x1);
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,-y,x1,-y);
}
}
return 0;
}
|
27
|
13484
|
main()
{
double x1,x2,a,b,c;
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
if(b*b-4*a*c<0)
{ if(b==0)
{ x1=(sqrt(4*a*c-b*b))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b,x1,b,x1);}
else
{
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),(sqrt(4*a*c-b*b))/(2*a),-b/(2*a),(sqrt(4*a*c-b*b))/(2*a));
} }
else if(sqrt(b*b-4*a*c)==0)
{printf("x1=x2=%.5f\n",(-b)/(2*a));}
else
{x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
}
}
|
27
|
13485
|
void main()
{
int i,n;
float a[100],b[100],c[100];
double x1,x2,d;
scanf ("%d",&n);
for (i=0;i<=n-1;i++)
{
scanf("%f%f%f",&(a[i]),&(b[i]),&(c[i]));
}
for (i=0;i<=n-1;i++)
{
d=b[i]*b[i]-4*a[i]*c[i];
if (d>0)
{
x1=(-b[i])/(2*a[i])+sqrt(b[i]*b[i]-4*a[i]*c[i])/(2*a[i]);
x2=(-b[i])/(2*a[i])-sqrt(b[i]*b[i]-4*a[i]*c[i])/(2*a[i]);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(d==0)
{
x1=(-b[i])/(2*a[i]);
printf("x1=x2=%.5f\n",x1);
}
else
{
x1=-b[i]/(2*a[i]);
x2=sqrt(-d)/(2*a[i]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
}
}
}
|
27
|
13486
|
int main(){
int n;
float a,b,c;
double x1,x2,m;
scanf("%d\n",&n);
for(int i=0;i<n;i++)
{
scanf("%f%f%f",&a,&b,&c);
if(b*b-4*a*c>0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-sqrt(b*b-4*a*c)-b)/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(b*b-4*a*c==0)
{
if(b==0){x1=x2=0.00000;}
else {x1=x2=(-b)/(2*a);}
printf("x1=x2=%.5f\n",x1);
}
else if(b*b-4*a*c<0)
{
if(b==0) {x1=x2=b/(2*a);m=sqrt(-b*b+4*a*c)/(2*a);}
else {x1=x2=(-b)/(2*a);m=sqrt(-b*b+4*a*c)/(2*a);}
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,m,x2,m);
}
}
return 0;
}
|
27
|
13487
|
int main()
{
int n,i;
double a,b,c;
double x1[100],x2[100],s1[100],s2[100];
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
if( (b*b-4*a*c)==0 )
{
x1[i]=x2[i]=(-b)/(2*a);
s2[i]=0.0;
}
else if( (b*b-4*a*c)>0 )
{
x1[i]=(-b+sqrt(b*b-4*a*c))/(2*a);
x2[i]=(-b-sqrt(b*b-4*a*c))/(2*a);
s2[i]=0.0;
}
else if( (b*b-4*a*c)<0 )
{
s1[i]=(-b)/(2*a);
if(s1[i]==-0.0)
s1[i]=0.0;
s2[i]=sqrt(4*a*c-b*b)/(2*a);
}
}
for(i=1;i<=n;i++)
{
if(x1[i]==x2[i]&&s2[i]==0)
printf("x1=x2=%.5f\n",x1[i]);
else if(x1[i]!=x2[i]&&s2[i]==0)
printf("x1=%.5f;x2=%.5f\n",x1[i],x2[i]);
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",s1[i],s2[i],s1[i],s2[i]);
}
return 0;
}
|
27
|
13488
|
int main()
{
int j=1,n,i;
float a,b,c;
double x1,x2,t,p,q;
cin>>n;
while(j<=n)
{
cin>>a>>b>>c;
t=b*b-4*a*c;
if(t>0)
{
x1=(0-b+sqrt(t))/(2*a);
x2=(0-b-sqrt(t))/(2*a);
//cout<<"x1="<<printf("%.5f", x1)<<";"<<"x2="<<printf("%.5f", x2)<<endl;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(t==0)
{
x1=(0-b)/(2*a);
//cout<<"x1=x2="<<printf("%.5f", x1)<<endl;
printf("x1=x2=%.5lf\n", x1);
}
if(t<0)
{
p=(0-b)/(2*a);
q=sqrt(-1*t)/(2*a);
//cout<<"x1="<<printf("%.5f", x1)<<";"<<"x2="<<printf("%.5f", x2)<<endl;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
j++;
}
return 0;
}
|
27
|
13489
|
int main()
{
int n, i;
scanf("%d", &n);
double a, b, c, x1, x2, p;
for(i=1;i<=n;i++){
scanf("%lf %lf %lf", &a, &b, &c);
p=b*b-4*a*c;
if(p>0){
x1=(-b+sqrt(p))/(2*a);
x2=(-b-sqrt(p))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if(p==0){
printf("x1=x2=%.5lf\n", -b/(2*a));
}
else{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", -b/(2*a), sqrt(-p)/(2*a), -b/(2*a), sqrt(-p)/(2*a));
}
}
}
|
27
|
13490
|
int main()
{
int n,i;
double a[100],b[100],c[100];
double x1[100],x2[100];
double s[100],t[100];
scanf("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
if (b[i]*b[i]-4*a[i]*c[i]>0)
{
x1[i]=(-b[i] + sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2[i]=(-b[i] - sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
}
if (b[i]*b[i]-4*a[i]*c[i]==0)
{
x1[i]=x2[i]=(-b[i])/(2*a[i]);
}
if (b[i]*b[i]-4*a[i]*c[i]<0)
{
s[i]=-b[i]/(2*a[i]);
t[i]=(sqrt(-(b[i]*b[i]-4*a[i]*c[i])))/(2*a[i]);
}
}
for (i=0;i<n;i++)
{
if (b[i]*b[i]-4*a[i]*c[i]>0)
printf("x1=%.5lf;x2=%.5lf\n",x1[i],x2[i]);
if (b[i]*b[i]-4*a[i]*c[i]==0)
printf("x1=x2=%.5lf\n",x1[i]);
if (b[i]*b[i]-4*a[i]*c[i]<0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",s[i],t[i],s[i],t[i]);
}
return 0;
}
|
27
|
13491
|
int main(int argc, char* argv[])
{
int n;
scanf("%d/n",&n);
double a=0,b=0,c=0;
for(;n>0;n--){
scanf("%lf %lf %lf",&a,&b,&c);
double x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
double x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
if((b*b-4*a*c)>0){
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
else if((b*b-4*a*c)==0){
printf("x1=x2=%.5f\n",x2);}
else if((b*b-4*a*c)<0){
if(b!=0){
double c1,d1,d2;
c1=(-b/(a*2.0));
d1=sqrt(4*a*c-b*b)/(2*a);
d2=-d1;
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",c1,d1,c1,d2);
}
else if(b==0){
double c2,d3,d4;
c2=0;
d3=sqrt(4*a*c-b*b)/(2*a);
d4=-d3;
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",c2,d3,c2,d4);
}
}
};
return 0;
}
|
27
|
13492
|
int main(int argc, char *argv[])
{
int n,i;
double a[100],b[100],c[100];
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++)
{
if(a[i]!=0)
{
double delta,m,n,x1,x2;
delta=b[i]*b[i]-4*a[i]*c[i];
if(b[i]==0)
m=0;
else
m=-(b[i]/(2*a[i]));
n=sqrt(fabs(delta))/(2*a[i]);
if(delta==0)
{
printf("x1=x2=%.5lf\n",m);
}
else if(delta>0)
{x1=m+n;
x2=m-n;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2); }
else
{
m=-fabs(m);
printf("x1=%.5lf+%.5lfi;",m,n);
printf("x2=%.5lf-%.5lfi\n",m,n);
}
}
}
return 0;
}
|
27
|
13493
|
void main()
{
int n;
scanf("%d",&n);
while (n--)
{
double a,b,c,x1,x2,g,h;
scanf("%lf %lf %lf",&a,&b,&c);
if(b*b-4*a*c>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(b*b-4*a*c==0)
{
x1 = (-b)/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else if(b*b-4*a*c<0)
{
g=(-b)/(2*a);
h=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",g,h,g,h);
}
}
}
|
27
|
13494
|
int main()
{
double a, b, c,d,e,g,x1,x2;
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d=(-b)/(2*a) ;
e=(sqrt(fabs(4*a*c-b*b)))/(2*a);
g=(sqrt(fabs(4*a*c-b*b)))/(2*a);
if((b*b-4*a*c)>0)
{
x1=d+e;
x2=d-g;
printf("x1=%.5lf;",x1);
printf("x2=%.5lf\n",x2);
}
else if((b*b-4*a*c)==0)
{
x1=x2=d;
printf("x1=x2=%.5lf\n",d);
}
else if((4*a*c-b*b)>0)
{
printf("x1=%.5lf+%.5lfi;",d,e);
printf("x2=%.5lf-%.5lfi\n",d,g);
}
}
return 0;
}
|
27
|
13495
|
int main()
{
int i,n;
double d,p,q,x1,x2,a,b,c;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
p=b*b-4*a*c;
q=(0-b)/(2*a);
if (p==0)
{
x1=q;
printf("x1=x2=%.5lf\n",x1);
}
else
{
if (p>0)
{
x1=sqrt(p)/(2*a)+q;
x2=-sqrt(p)/(2*a)+q;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
d=sqrt(-p)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",q,d,q,d);
}
}
}
}
|
27
|
13496
|
int main()
{
int n,i;
double a,b,c,m,x1,x2;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
m=b*b-4*a*c;
if(m>0)
{
x1=(-b+sqrt(m))/(2*a);
x2=(-b-sqrt(m))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(m==0)
{
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
x1=-b/(2*a);
x2=sqrt(-m)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
}
return 0;
}
|
27
|
13497
|
int main()
{
double a,b,c,d,e,f,k,l;
int g,h;
scanf("%d",&g);
for(h=0;h<g;h++)
{
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
if(b==0)
b=-b;
if(d>0)
{
e=(-b+sqrt(b*b-4*a*c))/(2*a);
f=(-b-sqrt(b*b-4*a*c))/(2*a);
if(e<f)
{
l=e;
e=f;
f=l;
}
printf("x1=%.5lf;x2=%.5lf\n",e,f);
}
else if(d==0)
{
e=-b/(2*a);
printf("x1=x2=%.5lf\n",e);
}
else
{
e=(-b)/(2*a);
f=(-b)/(2*a);
k=sqrt(-d)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",e,k,f,k);
}
}
return 0;
}
|
27
|
13498
|
int main()
{
int n,i=0;
cin >>n;
for(i=1;i<=n;i=i+1) //??
{
double a,b,c,d;
cin >>a>>b>>c;
d=b*b-4*a*c;
if (b==0)//??-0????
{
if(d>0)
{
cout<<fixed; //????????
cout<<setprecision(5)<<"x1="<<(b + sqrt(b*b-4*a*c))/(2*a) <<";x2="<<(b - sqrt(b*b-4*a*c))/(2*a)<<endl;
}
else if (d==0)
{
cout<<fixed;
cout<<setprecision(5)<< "x1=x2="<<(b )/(2*a) <<endl; //????????
}
else
{
cout<<fixed;
cout<<setprecision(5)<<"x1="<<(b)/(2*a)<<"+"<<sqrt(-d)/(2*a)<<"i;x2="<<(b)/(2*a)<<"-"<<sqrt(-d)/(2*a)<<"i"<<endl;
}
}
else
{
if(d>0)
{
cout<<fixed; //????????
cout<<setprecision(5)<<"x1="<<(-b + sqrt(b*b-4*a*c))/(2*a) <<";x2="<<(-b - sqrt(b*b-4*a*c))/(2*a)<<endl;
}
else if (d==0)
{
cout<<fixed;
cout<<setprecision(5)<< "x1=x2="<<(-b )/(2*a) <<endl; //????????
}
else
{
cout<<fixed;
cout<<setprecision(5)<<"x1="<<(-b)/(2*a)<<"+"<<sqrt(-d)/(2*a)<<"i;x2="<<(-b)/(2*a)<<"-"<<sqrt(-d)/(2*a)<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13499
|
int main() {
double derta,a,b,c;
int n,i;
cin >> n;
for (i=0;i<n;i++)
{
cin >> a >> b >> c;
derta=b*b-4*a*c;
cout.precision(5);
cout << fixed;
if (derta==0)
cout << "x1=x2=" <<b/(-2*a)<<endl;
else if (derta>0)
cout << "x1=" << (-b+sqrt(derta))/(2*a) << ';' << "x2=" << (-b-sqrt(derta))/(2*a)<<endl;
else if (b==0) cout << "x1=" <<b<<'+'<<sqrt(-derta)/(2*a)<<'i'<<';'<< "x2="<<b<<'-'<<sqrt(-derta)/(2*a)<<'i'<<endl;
else cout << "x1=" <<-b/(2*a)<<'+'<<sqrt(-derta)/(2*a)<<'i'<<';'<< "x2="<<-b/(2*a)<<'-'<<sqrt(-derta)/(2*a)<<'i'<<endl;
}
return 0;
}
|
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