Question

求解一道牛顿迭代法的题原题是求解非线性方程 x^5+35x^4-25x^3+10x^2+x+9=0 求X我用牛顿迭代法解

Answer 1

#include

#include

//原函数

double Func(double x)

{

return x*x*x*x*x+35*x*x*x*x-25*x*x*x+10*x*x+x+9;

}

//导函数

double DerivedFunc(double x)

{

return 5*x*x*x*x+140*x*x*x-75*x*x+20*x+1;

}

//与0的比较

BOOL IsZero(double x)

{

return (x = -0.000001);

}

BOOL newton(double *x,double precision,int maxcyc)

{

double x1,x0;

int k;

x0=*x;

for(k=0;k