(5^) 



it it 



hinc patet noflram aequ.itionem futuram cffe s(j:^ -i-e 

 vnde valorem ipfius s per feriem euolui oportet. 



»'>- 



^• = 1? 



^. 19. Ex ifta aequatione igitur deducimus datim 



quac difFcrcntiatii ct bis fiimta pracbet 



'^ ^^ — 7T5T«' 



quarum acqunlitatum fumma dat 



*• '^ — i- 7177 ' 

 diffiTL-entid vero 

 \ f 



'^ /* ^ -4— S iJL. • 



'- ^ , — ^ ^ . :-Tr ' 



harum autem produdum praebct 



Differentietur iam ifta aequatio denuo, fumto 'd t conilantc, ac 

 habebimus 1^^ — s—% j% fuie 'J-^ + S j' — s — o. 



§. 20. Pro hac acquatione refoluenda ftatuamus vti 

 fupra affumfimus 



.f — ,f -4- a / ; -h P ^^* '+- V ^* H- 5 /' -}- ctc. 

 vnde fit 



i^r:i . 2a-+-3 .4.j3^f-4-5 . fJy /•*-+- 7 . 8(^?*-+-9. ioe;*H-ctc. 



Dchide ob zs z~i -h 2 7. r f -J- 2 j3 /» ~f- 2 y f^ -}- 2 ri f« -J- etc. 

 ciit cubum fumtndo 



8 s^ 



