0

I'm testing this program for:

x^2 + 0.17714x -2.5147583

with k = 1.4997

I've been looking at this for hours and have worked through it on paper, but can't figure out why line 59 is calculating C[1] as 0.17714. C[1] should be 1.6768.

Can anyone please help me figure this out?

Thanks in advance!

```
#include <iostream>
#include <vector>
#include <iomanip>
using namespace std;
//Declare functions
void poly(vector<double>& A, vector<double>& B, vector<double>& C, double x, double& p, double& px, double& pxx, int& degree, int k);
//---------------------------------------------------------------------------------------
int main()
{
vector<double> A; // vector of coefficients a^degree...a^0
vector<double> B; // backup copy of vector A
vector<double> C; // backup copy of vector A
int degree; // highest degree
int k;
double x; // value of x
double p; // p(x)
double px; // p'(x)
double pxx; // p''(x)
poly(A, B, C, x, p, px, pxx, degree, k);
return 0;
}
//---------------------------------------------------------------------------------------
void poly(vector<double>& A, vector<double>& B, vector<double>& C, double x, double& p, double& px, double& pxx, int& degree, int k)
{
cout << "For polynomial p(x) = a0 + a1x + a2x^2 + ... + anx^n" << endl;
cout << "Enter the polynomial degree, n" << endl;
cout << "Example: 2 for a quadratic, 3 for a cubic..." << endl;
cout << "Degree: ";
cin >> degree;
A.resize (degree + 1);
B.resize (degree + 1);
C.resize (degree + 1);
for (int i = degree; i >= 0; i--)
{
cout << "Enter coefficient a" << i << ": ";
cin >> A[i];
}
for (int i = degree; i >= 0; i--)
{
C[i] = A[i];
}
cout<<endl<<"Enter Constant term(k) of Divisor (x-k)";
cin>>k;
for (int i = degree-1; i>0; i--)
{
C[i]=A[i]+k*C[i+1];
cout<< C[i] << endl;
}
}
//---------------------------------------------------------------------------------------
```