#include <iostream>
using namespace std;
int main()
{
double x[4]={1.1275,1.1503,1.1735,1.1972};
double y[4]={0.1191,0.13954,0.15932,0.17903};
double yy=0;
double xx=1.13;
for(int i=0;i<4;i++)
{
double p=1;
for(int j=0;j<4;j++)
{
if(j!=i)
p=p*(xx-x[j])/(x[i]-x[j]);
}
yy+=p*y[i];
}
cout<<yy<<endl;
return 0;
}
转载于:https://www.cnblogs.com/jiangnanyanyuchen/p/6126393.html
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