4 ( 4).
, . , .. , ( ) . , .
, , .
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4 -
4:
1 - - (22):
1 = , (22)
- 6, 7, 8 ( 8, 3), .
2 - ( ) (23):
2 = V × N + , (23)
V - , 1-5 ( 8, 2), .;
N - , .
3 - ( ) (24):
3 = × N, (24)
- ( ) ( 9), .
A - , .. , ( 25):
2 = 3 V × N + = × N.(25)
.
, :
- ( , ) 1=., 2=..;
- , ;
- , N = .. . :
1 = ., 2 = .
, , (1 2), , (1 2), ..