FLVIDORVM LINEARI. 327 



at ex angulo' Cf) interualliim x ita definitur Tt fiC 



hinc fit differentiando 



At efl: dt — ^-^ z=.^-^ , ideoque 1; — V- ^ reii 



?.^rrin.Cl)cor.C{) 



Ponamus nunc ad virgae terminum S in circulo 

 promouendum opus efle vi nS^, cuius dire^flio 

 cum fit ad radium GSnormalis, dabit pro diredione 

 S Q. vim jj^^^ qua virga fecundum fuam direclio- 

 nem pellitur , ea crgo punflum Q deprimitur vi 

 n: ^{^"^'^^^ 7 quae e(l illa ipfa vis quam in prae- 

 cedente problemate vocaui V^ vt fit V~^^^^. 

 Eft vero fin. GSQ^n^^^ et : ' ''^'v^^ 



rroc GQ+l^cof.Cj) . ■ SfGQ+ltofCl)}. 



et ob G(i=V(//-J^^fin,Cj)')-.^^cof.Cl), fict 



Vn 



fin.CpV(//^i^^fin.(p')-^^fin.Cpcof.Cl)* 



His definitis confideremus aequationem differeHtialeni 

 qua praecedentis problematis foiutio continetur. 



ii.'0dv{2h'i-m'{'bi-a)+{'Ki'i)vvdxz:'^gdx(V'-a''a 



'^&^b^b — ix) 



Confi- 



