->UI 



) 99 ( 3-??^- 



03 



Dlff. l"'. .+ 2 fin. Cl)(cof. a (p-Hcof. 4 0-}- cof 6C|)-f- ctc.) 



- 11". - :i' fin.Cp^^fin. 3 (4)-+-^^. 5 (i)-}-fin. 7 CpH-ctc.) 

 -lir. - 2' fin.Cl)'(cof. 4:CP-l-cof.6(i5H-ccf. 8Cp-^ctc.) 



- W. + 2* fin. 4^* ( fin. 5 + rin. 7 C|) + fin. 9 Cp -f ctc{) 



_ V. + 2^fln.Cp'(coC<)Cp-hcof. SCp-hcof.ioCp-l-etc.j 

 etc. etc. 



it» vt hoc cafu habeamu.s 



A A — -f- 2 fin. Cp cof. 2 cp 

 A' A =: - 2"- fin. Cp' fin. 3 Cp 

 £^' A — - 2.' fin. Cp' cof. 4 (p 

 A* A = -h 2* fin. Cp* fin. 5 (p 



etc. •'ii.i.rjs c.jujIuj :3 iniih 



vnde patet fcriem ex his differentiis formatam cam ipfam 

 c(Te , cuius fummam iniieriigare uobis ert propofitum , 

 fcilicet: 



2 fin. (p cof. 2 ^ 4 .^ 2' fin. (p' fin. 3 (|? — 5. 2' fin. p' cof. 4 ^ 



- ^ 2* fin. (p' fin. 5 ^ 4- j. 2' fin. (p' cof. 6 (p -H etc. 

 cuius fcrici igitur fumma hac formula exprimitur: 



X — A — /(fi.f I -+. ; JCl $ —/;?:. $ 

 ;c i > 



quae Cjuidcm , fumto x — o abit in 

 fcrentialibus prodit 



« . 



verum fumtls dif- 



dx 



— 2 p Cof (p , 



ficquc nadi fumus hanc fummationem memorabiiem: 



r 2 fin. cp cof. s. ^ + 1. 2' fin. (p' fin. 3 cp 

 2 (J) cof (JJzr < - ^. 2' fin. (p' cof 4(|J - ;. 2* fin. ^*fin.5^ 

 C + ^. 2' fin. (p' cof. 6 (p + etc. 

 cuiiis vcritas etiam fcqucntem in modum dcmonflrari 

 poteft. 



N 2 Dc- 



