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*

³, S 0 S, (. 9). - 0 .

. 9

0, S 0 S r , , S.

f (S) = g (S) + h (S ), # ^ , S S 0 , h (S) , S S r h (S) h (S) <h * (S) . , *, . 10. g (S) h (S). . S 0 ' - 0 S ,.

. 10

, * 򳺿 (. . 11) 4 18 .

. 11

 
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