H 1 S T O I R E. pi 



Pofito compendii caiif;! , 



m {p^ -h- fin."- a) (p* -\~ fin.* ^) r= N , fict 



£a mp cpr.rt [p * -^-f:n.'{i) £B ■ mp cof.^{p'-i-fin.*a) 



iy I f'[p^-i-fi!i.'?) 35^ p*tp'-i-Jin.*x) . 



dci ■" N ' 5 a N * 



undc ob — — o, efle dcbet, multiplicando per — , 



m cof. a (/)"' -h fin.' (3) — »/ cof. p (p' -|- lin.* a) 



— P (/" H- fi»-" P) -i- /> (P' -i- fi"-"" a) = O 9 vel 



m p^{coLa. — cof. p) -+- w (cof. a fin.*(3 — cof. |3 fin.*a) 



— p (fin.* p — fin.* a) =r o , h. e. 



m p* (cof. a — cof. (3) H- w (cof. a — cof |3) 



-I- ;;/ (cof (3 cof.* a — cof. a cof.* (3) 



— /) (cof - a — cof " (3) zi: o , fiiie 



o rz: (cof. a — cof |3) [;;/ (i -4- p*) -h w cof. a cof |3 

 — p (cof. a -4- cof (3) ] , 

 vel diuidendo per 7?i q" zzz —^ zzz i- ^ 



o — (cof. a — cof. P) [ I -f- «* cof a cof. |3 

 — ;/ (cof. a -f- cof p)]. 



Bini ifti faclorcs pofiti = o, duplicem dabunt valorcm ipfius 

 a \el p, c.ifu Maximi vel Mininii. Erit nempe 



I. cof a — cof|3j unde i) a — |3, et 2) ar3(5o'— p. 

 Altcr faL^or dat 



n cof a — n* cof (3 cof. a — 1 — n cof |3, 

 unde fit 



cof a r= ^ — "car.p _ i pariterque 



cof |3 — '-y-^-". — i . Proinde 



m a n. 



