public class RealFunction
  {
  private double[] coefficients;
  private int degree;
  private double power;
  //
  public RealFunction(double[] a, int k, double pw)
    {
    power = pw; degree=k;
    coefficients = new double[k];
    for (int i=0; i<k; i++)
     coefficients[i] = a[i];
    };
  //
  public double ComputeValue(double x)
    {
    double y = coefficients[0];
    double nexp = 1;
    for (int i=1; i<degree; i++)
      {
      nexp = nexp*x;
      y = y+ (coefficients[i]*nexp);
      };
      return Math.pow(y,power);
    };
  }