' [ 471 ] 
Sed =zz — zv-^vv; quanto brem fict 
Z~TV 
4 v - M ' 
Ut ZZ — Z V + V V fit . 
X 
Sed zz-\-2Zv~{-vv — 4-xxi unde fit 3 zv 
—\xx — — ; 
x 
jam vero eft z lr v'i—aa-\-b. 
Sequitur ergo, ut fit zv— 1 / aa-\-b> quam fi po- 
fueris = m, erit propterea /±xx — — —itn, five 
4 .xi — imx=a. 
Ha&enus habuimus duplex genus iEquationum; 
3 „ 
prius, in quo pofita fuerat —Vaa— b-, pofterius, in 
3 
quo fuerat = v a a -f- b. Ptius appellare licet Hyper* 
bolicum, pofterius Circulare, 
Ppp a PRO-* 
