SERIES SINGVLARES. 16$ 

 YiiJc iii generc (i ponatur vi -\- n ~X crit 



^ ^z^ ( 7 ) = ( ^ + 0/rx - a4 ./ ^'~ -f~ ./^3^ 



~/ ^ 'fz%^^ ~fZ\^2 •/"•• 



25. Qiio minus autem haec interpolatio in dii- 

 bium vocari poliit , comparentur hae exprcflioncs 

 pro ordinibus paribus cum ante exliibitis , indeque 

 obtinebuntur fequentes relationes : 



5 /-= '^f-.f- 



J J z*^ ^ z- J Z^ 



9f^.-^rb'fb-^^-fb-f'^ 



ii/^oi=4/?-/b-^^>^S-*-/^« 



i3/,^z.4 b •/L-o-V- ^fb-fb H- ^/^ • rb 



etc. 



qnae cum iis , quas olim elicui, perfeifle confcntiuut. 

 Si cnim ponamus 



/^ z^ a 7r= , /^ - e ttS /,hr = V 7r\ /^ =r_^^ tt* , 



f^ — e 7r'° etc. 

 erit vtique quemadmodum demondraji 

 5 § — 2 a a 

 7 Y~ 4 a § 

 9 <5" — 4 a y -{- i S ? 

 II £ — 4.a 5" -h + Sy 



13^ — ^ae-i-^SiJH-cyY 

 ij-vj — 4-a <^ -f-^ge-i-^y^' 



etc. 



X 3 «4. 



