(105) 

 hoc ergo cafii crir 



anguli aiitcm jo.t^ tangens ~'i(e'^ — e~-^), PrflctcrC;! vcro' 

 pro hoc cafu a=zi habebimus 



ipfac vero cooruinatae erunt 



ax=sj=ix=:{(; [fm.CpCf^-Hf-^^-cof.^C^^-^-^P)] et 

 XJ = fli'=J = U'[cof.C|)(f^-H^-^)-+-fm.Cl)(f^-^-'I>;j-f. 



Sicque hoc cafu intcruallum ao crit —f, 



§. 47. Si fimili modo pro curua cafus praccedciUw 

 ftatu.imus a— I, pro ea habebimus 



r = c (c^^ -{- e-^) , 



s = c(e^~e-'^), 

 ax = x=zlc[nn.(pCe^-e-^)-coC(p(e^-+.e-^)]-\-c^ 

 xs—j — lcicof.^pie^^-e-^^-^-fm.ip^e^-^e-^)]. ^^^^ ^ 



Sicqnc ctiam hoc cafu crit interualhim <7 — c, at radius os- ^'S- ^ 

 culi m punclo qz=2c. Hac autcm duac curuac hac infigni 

 propricratc crunt pracdir.ie, vt altcra oltcrius fit euohita. 



§. 48. Quo autcm rehulo intcr has duas curuas ma- 

 ximc memorabilcs, quarum ahera ahcrius eft euohita, clarius ^^^- ^^ 

 pcrfpici;itur, ambas coniuncftim in c;idcm ilgura rcpracfcntcnuKS '*' ^' 

 quac cnm :id communem diamctrum rcfcrantur, lit reda caa^ 

 illc diamctcr, ct as curna poftcriorc h)C() inucnta, qn;ic crgo 

 in a habcbif cufpidcm, cuius curuac fi radius oscuh in s fit rccfta 

 Noua Acia Acad. Imp. Sc. T. /. O s a-y 



