public CQuadraticFunction(QuadraticFunction qd)
{
A = qd.A;
B = qd.B;
C = qd.C;
}
public Complex2D Y(Complex2D z)
{
return(z.Square() * A + z * B + C);
}
public CQuadraticFunction(Complex2D a, Complex2D b, Complex2D c)
{
A = a;
B = b;
C = c;
}