,(5(5 THEORIA MOIVVM 



«• 2 7t cn— I 21—1 



2^-2 



ifta vero vltcrius redu(fla,praebet ^^"^''(/Pzr-"^' 0,^2 » 

 fumtisqueintcgralibus, debitisque rediaionibus inftitutis 

 inuenicturP^(21^^i^I%) 



fietLog.P-/=i^-i. 



4. Inueniinus ergo aeilimationem litterac afllim- 

 titiae P per indeterminatas ad curuam AB pertinentcs, 

 ct reperta efl (N. 3-)^^^^' ^^(^- 2.):==^(zi:7,)=i: 



fcfezPP 



■ — 3" (^^^ omnia erant inuenienda- 



28. Si curua FG contrahitur in pundlum G , vt 

 in Fig. 14- Mutabitur ^ in i, fientque adeo ic:^^^ et 

 ^rr^, vel ^/)^fi=:2PP , et hoc nobis viam fter- 

 nit inueniendi lineam proicdlorum in mcdio refiftenti, 

 Sit enim / finus anguli GB/', et mzzV{ i— //) eius cofinus, 

 critque pzz:hj €t formula gp^^r — z?? abit in gl ^ rzz= 

 PP, vel pofitaM=:/V, in^Ms:z— PP, ct differcntiando 



1 — 2n 

 ., . dg , idz , dMf 2dP\ 2P /„ 1 



logarithmice ^H-— -+-^(-_ ^j^-^^^—^-^ ( vcl quia 



p.-2n^P-_^'!_;etP^~^"~^«-"M'-^s2~^^ 



ap ) 



^^l^ '""' /2-^"^^'M^Vj, id eft i|+2^4^ J^ 



