95 HE SERIEB. QTIBFSD. CONSIDERAT. 



Hinc igitiir crit : 



■+- ■::vnf-^'-^'-:'-50 



■vel ferie prima verticali adlii furamatj 



u — r /a 



-A('0 



etc. 

 §. 44 Ciim nimc feriei notoe propofitaei — ^j4-|, 

 ^i,^.r^_ etc. fumma fit :z::B 'n'zz:mh- 12 fiet ea^ 

 dem fumma z::: 



-i-ero(^+-^*^-**^-^0 



etc. 



Vel cum fit h-^-U-,^'^ ^^^- =^^ erit feriei pro- 

 pofitaefummaB7r^=z/2-4-ia (/2-^3) + 1» (r^-^-L^J 

 + ^'(^2-T^-H-*-l-^)-t- etc. fuie hacc eadem fum- 

 ma ita poterit exprimi Yt fit 



— - i f ■' 1- J • J_ _ I T« -«; \ 

 4* V 2.^ '" 2. 4 + - ' 2 4. (5. <s / 



— i,f -L_-l-!^-l-^-^-'' -f-iL!ii:z_)etc. 



S*\2,2 '2.4.4 ' 2.4.<S.(J ' 2.4^6.8.8/ 



Qiioniam autem Ytcunque lias feries tranbmutemus , eas ad ie- 

 riem fimplicem, cuius fumma conftet, reducere non poflTumus, 

 negotium hoc abrumpamus, pluribus hisexpreffionibusconten- 

 ti, quas feriei propofitae i -^s+^j-^s+js-etc. aequales efle 

 inuenimus. COM- 



