, , . , . , , . .
. 5.1 1 |
(. 5.1, ) (. 5.1,6) . , .
, 2 | 0,5 | 0,75 | 1,0 | 1,5 | 2,5 | ||||
, |
, . 1=1 = 50 . , . 1, 6 , In= 1 + I = 100 . 16 2. (. 5.1, ) 46 = 24 2, (. 5.1,6) 26+16 = 28 2, . . . , . , ( ).
. 5.2 , 180 1 1.
. 5.2
IA = 1, o IN = 0. IN . , . . .
(. 5.3) .
(IA= I = I), .
(IA= I = I) , , 120 (. 5.4) , IN =Ia + I + I = 0. (), (. 5.5).
, , , 120, . - . :
|
|
1) , , ; ;
2) , ;
3) ( ), .
.
. , (. 5.6), 120. , 120. .
, (. 5,7,).
, , , X, Y, Z. (. 5.7, ) , N, . .
.
. , . Ua=Ea, Ub = Eb, Uc=Ec
.
, . 120, . = U, = U,
Uab = Ua U
(. 5.8). Ua, Ub, Uc. Uab Ua UB. Ua U. U = Ub Uc UCa = Uc Ua.
, :
1) ;
2) 30;
3) . (. 5.8):
(5.1)
(. 5.9) ( ), , . . .
_ , + + = 0, (. 5.9) : X , Y , Z .
|
|
, , . . .