In 8 parts x (x is a natural number), if it is a band fraction, the minimum energy of X is (), if it is equal to 0, X can only be ()

In 8 parts x (x is a natural number), if it is a band fraction, the minimum energy of X is (), if it is equal to 0, X can only be ()

In 8 parts x (x is a natural number), if it is a band fraction, the minimum energy of X is (9). If it is equal to 0, X can only be (0)