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C program for finding the root of any equation using secant method


Posted Date:     Category: Computer & Technology    
Author: Member Level: Silver    Points: 2

Use the secant method for finding root of any equation by using c++ programming


 

#include
#include
#include
#define f(x) (x*x*x-3*x*x-x+9)
void main()
{ clrscr();
float x,xo,x1,x2,yo,y1;
cout <<" enter the initial values"<< endl;
cin >> xo >> x1;
yo = f(xo);
y1 = f(x1);
if(yo * y1 > 0)
{ cout<<" invalid internal "<< endl;
}
do
{yo = f(xo);
y1 = f(x1);
x2 = x1-((x1-xo)/(y1-yo))*y1;
xo = x1;
x1 = x2;}
while
(fabs(xo-x1)>0.001);
cout<< " the reqd root is = "<< x2 << endl;
getch();
}





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