tf 4 S P E C I M E N 



vnde generaliter : 



(-' h c,A,?,etc.)-"1r ,(6, C ) "T- (&,c)(&,c,d,<>)^(&,c,d,< ? J (&,c, d,*,/,g) CtC * 



Tum vero etiam : 



«_&_£_*) „ il 1_ 



(6,6-,^) — * ^b ( &)(&,c,d) 



M,c,d,e,f) '__* d _ . / 



'(b,c,d } ej) « -+" /b — (&)(&, c,d) — (&,c,d)(&,c,d,*,/) 



ideoque generaliter : 



(a, &, c, d, p, etc,) f d 



"l&7c7d,e etc. * -+- b — (b )(&,c, d) ( &, c,d )(&,c, d,e,/) 



h 



{&, c, d,e,/) (&, c;d,e,/,g, &) "" etC * 



25. Sed miflis his , qnae ad feries fpectant , 

 quoniam ea iam fufius fum perfecutus , perpendamus 

 ea,quae ad fingularem harum quantitatum algorithmum 

 pertinent. Et formulas quidem iis fimiles , quae in 

 §. 20. funt inuentae , fuppeditabit nobis §. 22. ex quo 

 patet eife : 



(a)(b } c) -i(a,b,c) — -c 



(„, b) (b> c % d) -(*).(*, b> f , d) = ~\-d 



(<*,£, c)(b,c, d,e) ~(b,c)(a,b y c,d, e)zz-e 



(tf, b % c,d) (b, c, d, ejy~(b i c : d)(a,b ) c ) d ) e ) f)zz-+'i 

 ideoque geneialiter ; 



(a>b I)(b /,;;/,w)-^.. A)(a,b y>/, k) __ -{- « 



vbi fignum -f- valet , fi in primo vinculo numerus 

 indicum fit par ; contra fignum — . 



25. Per fimiles autem reduftiones inteiligitur fore, 

 (a)(b,c,d) -i{a,b,c,i)z=L-(v t ti) 



(a,b)(b,c,d^ -(J)(*,^,4O=_:-r-(40 

 («^(b.s^e^-^s^a^c^ej)^-^}) 



et 



