static void Main(string[] args)
{
Console.WriteLine("Please input points in x y representation.");
Console.WriteLine("Type END to finish.");
int index = 1;
try
{
VandermondeMatrix matrix = new VandermondeMatrix();
while (true)
{
Console.Write($"P#{index++}: ");
String input = Console.ReadLine();
if (input.Trim().ToUpper() == "END" || input.Trim() == "")
{
break;
}
matrix.AddEquation(new Point(input));
}
matrix.toVandermonde();
Console.WriteLine("Resulting polynomial will be of the order - " + Polynomial.CalculateOrder(matrix));
Console.WriteLine("Calculated polynomial:");
double[] coefficients = matrix.GetResults();
Console.WriteLine(Polynomial.Format(coefficients));
Dictionary <int, double> calculatedPolynomial = Polynomial.Calculate(coefficients);
foreach (KeyValuePair <int, double> value in calculatedPolynomial)
{
Console.WriteLine($"f({value.Key}) = {value.Value.ToString("0.000")}");
}
Console.WriteLine("Derivative:\n" + Polynomial.CalculateDerivative(coefficients));
double inititalGuess = 2;
Console.WriteLine("Looking for a root with initial guess 2");
Console.WriteLine("Root found for x = " + Polynomial.CalculateRoot(coefficients, inititalGuess).ToString("0.00000"));
}
catch (Exception e)
{
Console.WriteLine("Error occured: " + e.Message);
}
}
