[2] [4], .
2 - . . ( ρ) :
ρ = 1 + × (-1), = |-1,
: ρ - () ;
- ;
- (1);
- .
4 - . . ( ). () :
, - 1,8 6- , , - 1984.:
6 = 1,1255 = 1,8; 5 = 1,6; 4 = 1,424; 3 = 1,266; 2 = 1,125; 1 = 1,00
. 2 [3] , [1] - , [2] ( = 3,5).
, ( ), , , . ( ) .
. .
, . , , .