#include<iostream> #include<cmath> using namespace std; #define JD 0.001 #define MAXCount 20000 double Next(double pre,double x){ double ans=0; ans=pre-(pow(pre,7)+0.5*pre-x)/(7*pow(pre,6)+0.5); return ans; } bool Jd(double pre,double x){ double value=(pow(pre,7)+0.5*pre...