() .
F , , X.
, :
Y(t) = KX(t), . , (11.1).
, , , . , , .
:
F, - . ;
F, ( ) ;
F, ( ) , .
, , .
,
C, . (. 11.3)
Dx = F-1(Y) - , () ; F-1() , , .
. 11.3.
, .
S , DY Y D X. S = DY/D S = DY/(DX/X) .
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, , .
, . , . .
Y(x) x, x1,..., xn.
. , . , , , , .