ProbL 



QVadrcn-e Curvam^ cujus abfcijja ejl z <^ ord'mata 

 ff — hz 



— ~ — ; — 9 uhi f . habaii valores in 



Prohl. \ 2 definitos. 



o 



g — h z 



Rdinata — — - — ; • dividatur ia partes 



l—fz+z' ^ 



hf — hz ^ g — y h f 



& - — , , \ ♦ Pars prior 



dat aream — h, log. \/i — /z-j-z^ five in 

 notatione Cotefiana — h ' — f z z^ : i ) 



i hf g _ , T 



poiterior vero ^ » denotat 



arcnm circuli , cu)us radius eft V i — ^f^ & tan> 

 gens i f — z. 



Sit in Fig. 2. PA quilibet arcuum quorum 

 cofinus eft ^ f. Jungatur AO, & centro A inter- 

 vallo A a , defcribatur circumferentia circuli a N M, 

 occurrens ipfi S A in N & ipfi OA in M. Et quo- 

 niam eft O A =r i , Oa — i/, Os ir z erit 



Aair \/i — f f^ &aSzii/' — z, adeonue 

 arcus N— D. Recedat punQnm Sad O, utevaneicat 

 SO fi ve z , & arcus a N cvadet a M , quare ut incipiat 

 area una cum abfcifla, minuendus eftarcusDarcuaM, 

 &v'alor ipfius D correQius erit MN, & area 



^^^7/ X D erit X MN. 



Jam ut radius V i — i / * *d arcura MN ita 



N3 g-^ 



