#include <iostream>
#include <math.h>
using namespace std;
void aproksymacjaSredniokwadratowa();
int main()
{
aproksymacjaSredniokwadratowa();
cout << endl<<endl;
getchar();
}
void aproksymacjaSredniokwadratowa()
{
double tabx[10] = { -5, -4, -3, -2, -1, 0, 1, 2, 3, 5 };
double taby[10] = { -110, -60, -20, -10, -1.5, 2, 7, 18, 50, 170 };
int wielStopien = 3;
const int rownaniaIlosc = 4;
double aWyliczone[rownaniaIlosc][rownaniaIlosc];
for (int i = 0; i<rownaniaIlosc; i++)
{
for (int j = 0; j<rownaniaIlosc; j++)
{
aWyliczone[i][j] = 0;
}
}
int h;
for (int i = 0; i<rownaniaIlosc; i++)
{
h = i;
for (int j = 0; j<rownaniaIlosc; j++)
{
for (int k = 0; k<10; k++)
{
aWyliczone[i][j] += pow(tabx[k], h);
}
h++;
}
}
double wynik[rownaniaIlosc];
for (int i = 0; i<rownaniaIlosc; i++)
{
wynik[i] = 0;
}
for (int i = 0; i<rownaniaIlosc; i++)
{
for (int j = 0; j<10; j++)
wynik[i] += pow(tabx[j], i)*taby[j];
}
cout << aWyliczone[0][0] << "a0 + " << aWyliczone[0][1] << "a1 + " << aWyliczone[0][2] << "a2 + " << aWyliczone[0][3] << "a3 = " << wynik[0] << endl;
cout << aWyliczone[1][0] << "a0 + " << aWyliczone[1][1] << "a1 + " << aWyliczone[1][2] << "a2 + " << aWyliczone[1][3] << "a3 = " <<wynik[1] << endl;
cout << aWyliczone[2][0] << "a0 + " << aWyliczone[2][1] << "a1 + " << aWyliczone[2][2] << "a2 + " << aWyliczone[2][2] << "a3 = " << wynik[2] << endl;
cout << aWyliczone[3][0] << "a0 + " << aWyliczone[3][1] << "a1 + " << aWyliczone[3][2] << "a2 + " << aWyliczone[3][3] << "a3 = " << wynik[3] << endl;
getchar();
}
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