80 Dr. I. J. Schwutt on Methods for the 



therefore 



S = ^2 



/' 



Q f ** 10 



11 \n-\-K) 



1 10 A 



But Tj-i- -»jA, 



k = 4 



and A. = (-l)' ( -^i)TTIO^)! = ^f(«--> 



Hence 



S -'»(!)|<-M.1J,^. 



= »(i)l<--C^)i.,l^- 



Let 2 — — = S K , 

 »=o » + * 



then » r m _ S *" "v 1 r ™ 



o K = 2, 2, — — A — i 



m=K m m-l Wl- m-l m 



= _ log (!_.)_ 2 -. 



m=l »l 



Therefore 



s = iog)io g (i-,)| i (-i)-( K ! i )i K 



= - 8 40(i^log(l-,) + 10Qj (-l)-Ot 

 = H|) ! ( _D« +1 (6)t!l^_ 8 40Ci=^lo g 



r 10 * =0 V ; W». = i m r 10 



m 



(1-f), 



840 T /I \6 1 /I ^ .i^ 11 2 37 3.L 57 4 87 :> 



> [-(l-r) 6 log(l-r)-r+ yr- ^ r 3 + T ?> 4 - ^r 



49 6 1 7 1 . 1 Q -] 

 ^20 7 56 252 J 



