, , U A, U B, U C. Z N. (. 108):
U A, U B, U C , :
,
,
.
. - , , (. 109, , ). , , . , Z N (. 109, ). : I N = I A 0 + I B 0 + I C 0 = 3 I A 0. 2- (. 3) :
U A 0 = I A 0 Z 0 + I N× Z N = I A 0(Z 0 + 3 Z N)
(. 109), Z 0 3 Z N.
(. 4, , ) Z 1, Z 2, Z 0 - , . .
. 109, , , :
; ; .
(. 108) , , :
I A = I A 1 + I A 2 + I A 0,
I B = I B 1 + I B 2 + I B 0 = a 2× I A 1 + a × I A 2 + I A 0,
I C = I C 1 + I C 2 + I C 0 = a × I A 1 + a 2× I A 2 + I A 0.
( , .) , . . , (, ), (). .
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