. , , .
, S (. 257).
. 257
, 5 , , , S ( S). , l/2, . . P1M P0M = P2M P1M = P3M - P2M=...= l/2. , . , l/2, .
(177.1)
1, 2,... , 1-, 2-,..., m- .
. m- hm(. 258).
. 258
, , m- Dsm = smsm-1, sm-1 , (m 1)- . ,
(177.2)
, , ˫ ,
(177.3)
m-
(177.4)
(177.4) m;, m . , .
, , jm(. 258) n , . . ( 0) . , m . ,
, , ; , a = b =10 l = 5 . , m- , . .
(177.5)
(177.1)
(177.6)
, , (177.5), , m/2 .
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|
, . , , .
(1772) , hm ≪ a ( m), r2 = 2hm. (177.3), m- :
(177.7)
a = b =10 l = 0,5 () r1 = 0,158 . , S , SM, . . . , .
. , , , . . rm , (177.7) , b l (m = 0,2,4,... m = 1, 3, 5,... ). ( b , ), l . A = A1 + A3 + A5 +... , . : , .