public PowNumericalExpr(NumericalExpr num, NumericalExpr exp) : base(EExprTypeS.Rational)
{
Number = num;
Exp = exp;
}
public RationalNumericalExpr(NumericalExpr numer, NumericalExpr denom) : base(EExprTypeS.Rational)
{
Numer = numer;
Denom = denom;
}