pS COKSIDERATIO 



a aa , "l 



§ i8. Dcinde aiitcin veriras illiib fcrici pro rcli- 

 qiiis ipfub n valoribus fcqucntcm in niodiim olkndi potelh 

 Si fiicrit : 



_ _^ fl'" a^ 



^'~' a-i" {a-i){a^—i) [a-i)[u-i)[a'-i) 

 dico fore quoqiie : 



_«"-+■■ g^"- 



^" a-i " [a-i] 



Nam cum fit per hypothefm : 



«"-+■' tf^"-*-' /z'"-^^ 



a—i {a-i)^a -i) {a—i)[a-i{a—i) 



a- a'" 



: r- -h: y-i — ^i r - ^^^- "if quoque 



a-i {a-i)^a-ii {a-i)[a -i){a —i) * 



a'" <7"* 



— 0* -4-- \— 1 — , — ctc. 



a—i (a—i)^a-i) 



quae (eries inuicem additae dabunt : 



a—1 {a-i)(a -i) {a-i)^a —i)\^a -i) 

 Qiiare cum hacc ferics : 



a-i {a-i)^a-i) {a—i){i—i){a-i) 

 vcra fit odenlii c;i(ii «rr i , erit quoque vera cafii ;;= a, 

 hincqiic porro cafibus « zr 3 , « — 4. , etc. ita vc qui- 

 cunquc numcms intcgcr aiHrmaiiuiis pro n fublhtuatur , 

 fiimma fcrici pcrpttuo fiiuira fit " 1. 



§ 19. Qiioniain fcricm initio piopofitani .f ~ ^ 

 (.1— .v) ctc. lccundum dimcnfioiics ipfiiis x hic difpofui , 

 opc proprictatis (iipra dcinon(b-atac M-2/-i-.f— ^.v4 tfA"(J-?) i 

 non incongruum crit candcm tranMiiut;uioncm immcdiatc 



cx 



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