 + = + + +M M M( )N N N N−0 1 1Ó X C X C X CTA C

1 ...

 + = + + +

m

m

m

( )

n

n

n

n

0

1

1

ó x C x C x C

Ta c : 1 ...

 

n

n

n

+

+

+

m n

m n m n

+ = + + +

0

1