private Func <double, double> gReal, gIm; // реальна і уявна частина значень на границі Г
public SystemOfIE(SmoothCore _H11, SmoothCore _H12, SmoothCore _H2, Func <double, double> _gReal, Func <double, double> _gIm)
{
H11 = _H11;
H12 = _H12;
H2 = _H2;
gReal = _gReal;
gIm = _gIm;
}
public static double CalculateWithWeakSingularCore(SmoothCore f, int n)
{
int N = 2 * n;
double temp = 0;
double h = Math.PI / n;
double sum = 0;
for (int i = 0; i < N; i++)
{
sum += f.GetValue(temp) * CoefficientForWeakSingular(f.Param, n, temp);
temp += h;
}
return(sum * 2.0 * Math.PI);
}// for periodiс cores with smooth part f on [0, 2*PI]x[0, 2*PI]