192 



E. I. Terekhin 



Here ^j^nax ^^ ^^^^ greatest numerical coefficient of emission in the residual 

 series As from ^ = ^ + 1 to cxd. 



To study the character of the functions 



oo 



2 (^n-p+ In+p-^k) and {l^_p+l^^^-2l^) 

 n = m + l 



with change in n, we present the second of them as the second derivative 

 of the coefficient of recession l^ for n: 



iln-p,+ In+po-^^n) = {ln-p,-ln)-{ln-hi+p) ^-^{AnY. 



Putting An = 1, we have 



(%-Po+^/7+Po -^^n) 



dHr 



and, consequently, 



/ , (^n-po+ ^n+Po *^^n) '^ ~~ 



For the symmetrical AMNB apparatus l^ 



din 

 dn 



entiation we obtain 



{x^ + 4^2)v. 



din 

 dn 



dH 



12:^3 



{x^ + 4.nyi- 



16/z2- 



— 1 2ir2 

 dn^ (%2 + 4/z2)'/. • 



After differ - 



dn 



^„2 



Fig. 1. 



