.
, . ( , ).
, () ri, /
r 1 = r 2 = r 3 = = r m= = r n .
, . ,
r 1 1 = r 2 2 = r 3 3 = = r m m = = r n n.
1, 2, 3,, m,, n 1, 2, 3, , m, , n , , . 1 .
i/ >1, , , i- . i/ <1, i- . , , . , (i/ =1).
. , , i/ . , .
, . , , , .
. , , . , . 9.9 , . , ( ), ( ) . ,