( 8, ).

8.

, , . (3),

        (17)

I , .

(4) (7),

,

,         (18)

.. , , (R ).

( 8,). , , , :

,

o 0 t,

,         (19)

U 0 t = 0.

, .

U 0 , , , . , :

, ;

, , .


, ( ) ? - , (). , , . , , , . FAQ .

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