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, .. . , :

yS = yS (p)

, .

. : .

, , :

WD = p dy/dL

. , , , W, ; , . , , WS = WS (L). , :

WS = WS (L, p).

WD (p, L) = WS (L). :

, , , .

8. AD AS , . AD, AS .

AD , AS :

AS AD ;

AS AD ;

AS AD , .

AD :

AS , ;

, ;

, , .

, AD . AD (. 2.4) , , . , . ( , , ). . 2.4.

AD, , . , , . , .

.





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