:
. (5.8)
(5.8) , x, x , , x - 0.
:
. (5.9)
, ( ) (r = 0) h u/ 1 0,5.
, : r =0 c =0 :
0= = 0,5 2; w 1 cosb 1 = c 1 cosa 1 - u; 1 t =c; 1 =j; w 2 =yw 1.
(5.9) h , :
. (5.10)
(5.10) , h u/, , j y, a 1 b 2. h u/, u=pdn . h=f(u/) , u/ =0 u/=j osa1 (. 5.2, ). h (r =0)
. (5.11)
r u/ :
. (5.12)
r =0 r =0,5 (5.11) (5.12) (u/) . , u u/ . , . h=f(u/) r >0 . 5.2, .
) )
. 5.2. h=f(u/) () () :
xc ; x ;
x