Akm = {{2, 0, (5/21)*((sqrt(21))*(Ma2u) + (2)*((sqrt(14))*(Meu)))} , 
       {4, 0, (3/14)*((2)*((sqrt(21))*(Ma2u)) + (-3)*((sqrt(14))*(Meu)))} , 
       {4,-3, (3*I)*((sqrt(3/2))*(M))} , 
       {4, 3, (3*I)*((sqrt(3/2))*(M))} }