U D ; ; .
; ;
.
( )
, ( )
. - , .
(I) (U) (R). I =
I =
, , , .
\ =
2 +, - , -
+, - ,
2 +, - , -
1 N=(y - 1)
2 M = -(y-1)
1 2 . , .
I11R11+I22R12+I33R13= E11
I11R21+I22R22+I33R23= E22
I11R31+I22R32+I33R33= E33
I11, I22, I33 () .
R11, R22, R33 -
R12,=R21; R13=R31; R23=R32 - -
E11, E22, E33 ( ... ).
. , .
;
;
;
- , , .
-
- .
, ( )
I= - =0
= ,
|
|
,
(.. )
-
, .