A FERMJTIO ?ROrOSm. .57 



r—6-^ V(^xx~\rjj)= ^20 



I cath. -t ; II cath. rr 'f; ; III hypot. - ^; 



Area vero erit =z ^'f^ ='s?Ji'» : ficque fiet 



I. cath. - area = ^<^!i - 14-) = f> =( .7)' 



II. cath. — area == —7:772 — — 7:7 ^ — s.TI^ — l IHTJ 

 Hocque exemplum fine dubio in numeris minimis ex-iltit , 

 vti deinceps oftendam. 



Exemplum, 2. 



§. 16. Qiiia debct efle c^^^rr, oportet vt fit j^ 

 ^a-Va ; nihilque refert, fiiie fit zdd^p^cc fiue minus, 

 qiiia nihil obftat, quo minus p, ^, r, elTe queant mimeri 

 negatiui. 



iSit igitur d—^\ f— 3; erit idd—cc — —\ \ idd-i- 

 cc—iy atque 



p :=: —24. i:z=-24. 

 ^— 17. 17 = 289 



j— 2.7.41.17 



r = -2. 17=1-34. , y(4A:A;4-j7) = 2.5.53.3i3 



^ 2 



I.cath. -7^;II.cath. rr'-^'/-; III. hyp. -^^ 

 §.17. In his omnibus excmplis notari meretur , 

 perinde eflTe, fiue littenirum c et d valores capiantur aflir- 

 matiui , fiue negatiui , inde enim tantum valores p, vel 

 q, vel r prodeunt negntiui; ne^ue proptere.i valores a; er 

 Tom. 11. Nou. Comment. H f 



