. 3.9 . = const . 3.10.
= 0 -
pn (. 3.10,). . , , , (). .
, . . = 0 = 0, . , = 0, .
. 3.11 = const.
, h21.
.
,
. (3.13)
, , (3.13)
, (3.14)
- , ;
- .
h21 , .
, , , , - . , .
, , , .
. , . :
1. ( ) . , .
2. , , . pn .
. 3.12 = const .
h21 . -
|
|
, , . .
. 3.13 = const.
, . . .