private static Function _add(VariablesMulriplication vars1, VariablesMulriplication vars2)
{
List<FunctionElement> vars = new List<FunctionElement>();
vars1.variables.ForEach(v => vars.Add(v.Clone() as FunctionElement));
if (vars1.Equals(vars2))
{
return new Function(new VariablesMulriplication(vars.ToArray(), vars1.Constant + vars2.Constant));
}
List<FunctionElement> vars22 = new List<FunctionElement>();
vars2.variables.ForEach(v => vars22.Add(v.Clone() as FunctionElement));
return new Function(new VariablesMulriplication[]{
new VariablesMulriplication(vars.ToArray(), vars1.Constant),
new VariablesMulriplication(vars22.ToArray(), vars2.Constant)
});
}
