588 



iuid Huis, again on accoiiiit of (5j 



Uu = .,, - ^ — • '—— . (-1)" -^ ,—^ ^-" , ^/2„4-i = O 



J-— ' 1/ rr er n! 



h-> 



<'-"^ll) .«;.. K"-nr 



22- V^ --r ' ' n/r(27/.-f;.) 



(— 1)' --^ 





sü tlial 





2) 71 ,, , / ^A 2n + A— 1 



w/rU + -^ 



Fur c = () \ve ai-e e\i(leiitlv ai>;aiii in the special case ot' Abei/s 

 prohleui (§ J). 



l.ct us now snbstilute if' and a now found in ild) and [lb), we 

 then arrive at the integrale(|nation 



f{^v)= rj^l - ';^^( ~\ j {.,-%)' '^ ^ ((3a) 



to which belongs as solntion : 



sin l:t 'r l\l) 



X-IY-' 



. \2n ^ 



... X:. (1-/) ^C^^ ^ . . 2 ; (.,;-^/n+^-l 



k\' 2n 4-1—1 



n! r\ n + ^ 



As 1 > A > 0, f{(i)=z() and ƒ(./■) is Unite the last integral passes 

 by means of partial integration into 



