private Matrix getInverseGessePoly(PolynomialDerivativeFunction function)
{
double [,] arr = new double [2, 2] {
{ function.coefficients.a * 2, function.coefficients.b },
{ function.coefficients.b, function.coefficients.c * 2 }
};
return(new Matrix(arr).getInverseMatrix());
}
public List <string> getResults(PolynomialDerivativeFunction function, double x1, double x2, double e)
{
List <string> results = new List <string>();
Matrix grad = null;
Matrix gesse = getInverseGessePoly(function);
int i = 1;
do
{
grad = calculateGrad(function, x1, x2);
Matrix res = gesse * grad;
x1 -= res.get(0, 0);
x2 -= res.get(0, 1);
results.Add(String.Format("k={0} x1={1} x2={2} f(x1,x2)={3}", i++, Math.Round(x1, 3), Math.Round(x2, 3), Math.Round(function.getY(x1, x2), 3)));
} while (grad == null || (Math.Abs(grad.get(0, 0)) > e && Math.Abs(grad.get(0, 1)) > e));
return(results);
}
public List <string> getResults(PolynomialDerivativeFunction function, double eps, double x1, double x2)
{
return(getResults(function, eps, x1, x2, 0.5, 0.3, 0.5));
}
public List <string> getResults(PolynomialDerivativeFunction function, double x1, double x2, double e)
{
return(getResults(function, x1, x2, e, 0.1));
}