AZY  - + ZXAXX TRONG ỦOỰ ZX VAỨ AXA

36. Xeựt phoựng xaù :

^A

Z

^Y

 

^-

+

^Zx

^Ax

^X

Trong ủoự Z

x

vaứ A

x

A . Z

x

= Z – 1 ; A

x

= A B . Z

x

= Z + 1 ; A

x

= AC . Z

x

= Z – 2 ; A

x

= A – 2 D . Z

x

= Z – 2 ; A

x

= A – 4