Newton Raphson Program in Cpp

NewtonRaphson

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+#include<iostream>
+#include<bits/stdc++.h>
+using namespace std;
+
+double f(double x);    
+double fprime(double x);
+
+
+double f(double x)    
+{
+    double a=pow(x,3.0)-x-11.0;    //equation whose roots are to be determined
+    return a;
+}
+
+double fprime(double x)
+{
+    double b=3*pow(x,2.0)-1.0;        
+}
+
+int main()
+{
+    double x,x1,e,fx,fx1;
+    cout.precision(4);  
+
+    cout.setf(ios::fixed);    
+    cout<<"Enter the initial guess\n";    
+    cin>>x1;
+
+    cout<<"Enter desired accuracy\n";   y
+    cin>>e;
+    fx=f(x);                
+    fx1=fprime(x);
+    cout <<"x{i}"<<"    "<<"x{i+1}"<<"        "<<"|x{i+1}-x{i}|"<<endl;                
+
+    do            
+    {
+        x=x1;               
+        fx=f(x);           
+        fx1=fprime(x);           1
+        x1=x-(fx/fx1);            
+        cout<<x<<"     "<<x1<<"           "<<abs(x1-x)<<endl;        
+    }while (fabs(x1-x)>=e);
+
+    cout<<"The root of the equation is "<<x1<<endl;
+    return 0;
+}