RationalPoleFreeInterpolation()
 {
     _barycentric = new BarycentricInterpolation();
 }
 EquidistantPolynomialInterpolation()
 {
     _barycentric = new BarycentricInterpolation();
 }
 ChebyshevSecondKindPolynomialInterpolation()
 {
     _barycentric = new BarycentricInterpolation();
 }
 ChebyshevFirstKindPolynomialInterpolation()
 {
     _barycentric = new BarycentricInterpolation();
 }