艾特肯加速法(steffensen方法)

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1、#include#include#includeusingnamespacestd;doublef(double);main(){/*doublex1=double(0.000000000);doublex2=double(0.000000000);doublex3=double(0.000000000);doublex4=double(0.000000000);doublec=double(0.000000000);doubleb=double(0.000000000);doublee=double(0.00

2、0001);//cout<<"Enterthex1:"<>x1;//cout<<"Enterthee:"<>e;x1=0;//两端点之一x2=1;//两端点之一x3=x2-F(x2)/((F(x2)-F(x1))/(x2-x1));if(x2>x3)x4=x2-x3;elsex4=x3-x2;cout<e){x1=x2;x2=x3;x3=x2-F(x2)/((F(x2)-F(x1))/(x2-x1));cout<

3、<x3)x4=x2-x3;elsex4=x3-x2;}*/doublex1=double(0.000000000);doublex2=double(0.000000000);doublex3=double(0.000000000);doubley=double(0.000000000);doublez=double(0.000000000);doublee=double(0.000000001);cout<<"Enterthex1:"<>x1;y=f(x1);

4、z=f(y);x2=x1-(pow((y-x1),2)/(z-2*y+x1));if(x1>x2)x3=x1-x2;elsex3=x2-x1;cout<e){x1=x2;cout<x2)x3=x1-x2;elsex3=x2-x1;cout<

5、is:"<