首师大附中科创教育平台我的刷题记录(给大家刷21--25题吧)
仅供同学们参考,禁止抄袭!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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#include#include using namespace std;int main(){ double a,b,x; cin>>a>>b; x=-b/a; cout< <
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#include#include using namespace std;int main(){ double R1,R2,A; cin>>R1>>R2; A=R1*R2/(R1+R2); cout< <
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#include#include using namespace std;int main(){ double A,B,C,x; cin>>A>>B>>C; x=A+B-C; cout< <
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#includeusing namespace std;int main(){ double R,m1,m2; cin>>m1; cin>>m2; cin>>R; cout<<(6.674e-11*m1*m2)/(R*R);}
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#include#include using namespace std;int main(){ double v1,v2,a,b; cin>>v1>>v2; a=v1*v1+v2*v2; b=a/2; cout< <