FORMVLAR. INTEGRALIVM. 4.7 



visde nihil concludere liceL 



dz 

 4 . Ponatur Z zr pj- 



*^ fy /i *y' 



^^yj^lzz)[h^kzz) ^"'^^"' • 



f{f-a.h)~p\ zfig-ak)^:^^- gig-a.k^ — qg 



vnde nihil concludere licet. 



•• D -7 , /gV(/ ^+^ssy , . zzdz 



5 . Ponatur X-pJ— ~-^^J^7 



( f-^g z z)\ ^ "^ V(/+^::5:X/^+^2;2) 

 fietque : 



f(f-ah) — ph; zf(g-»k)=pk\-qf; g{g'ak)z=.qg 

 -vnde nihil colJigere licet. 



6^ Ponatur Z-pf——^ --^ _|-^/^~y 



{J-hgzz)^ ^ J+gzz 



fieri debet : 



fif-ah)=zph + qfh)r ^f(S'Uk)=:pk + q(fk~hgb); 



g{&-cik)-qgk 



vnde colfigitur : 



a—'-hk — -, p^^^—Bk^ et ^ = i, ideoque 



J^f-^y h-^kzs.~^+ bk ■^'^j^s^z.-T~hk J»y^ '—syy 



cxiHeute 7 — yir+i^J- 



CorolJ. I. 



91. Hinc omnes quatuor cafus difficiliores deri- 

 \ari poflunt. Primus nempe ftatim dcducitur ex no. 6 j 

 nam ob/fe>^^, erit ex cafu III. 



fdj/y — —-^y — —-^^YiY^ (■^-yyg) [hD 



exiHcn- 



