how to create queue that will hold pointer to function?

I try to make queue that can receive pointer to function - and i can't find how to do it

this is my code

        struct TaskElement
    {
        int id;
        std::function<void()> func;

        void operator()()
        {
            func();
        }
    };

    int main()
    {

        MyMath* myMathElement = new MyMath();

        myMathElement->Print_1();

        Queue<TaskElement> myQueue;


        TaskElement t1;
        t1.id = 1;
        t1.func = myMathElement->Print_1;

        TaskElement t2;
        t2.id = 2;
        t2.func = &myMathElement->Print_2;


        myQueue.push(t1);     Error !!! &': illegal operation on bound member function expression
        myQueue.push(t2);     Error !!! &': illegal operation on bound member function expression

        auto rec1 = myQueue.pop();

        rec1();



        std::cin.get();
    }