->I4^ ) 37 ( ^n^ 



quae cxprcfTo cum conflet quatuor membris, fingula feor- 

 fim euoluamus, Erit igitur: 



ftn.a- ftn.b- (m.c^ (in.a- (in. b- iii.c'' ' 



II. fin. A cof. B cof. C = 'Ll^^^yiil^^ P' = irfp^-»33-a7^- t^i) . 



III. fin. B Cof. A COf C =: ^*:- ^m- « ?) - M«V-3«a-(3V7 + 3(3« >) 



//n. o'/m. 6'/jn.. c* jtn.a^ fin.b'^ im.c^ ' 



IV. fin. C Cof. A rof B r: '"'^-P r>f3- « >) — fcCa^-^ata-T^^-i-W aS) 



' ' j;n. a» /;n.6- J/M.c- /m.a'jin. 6*Jia.c» * 



Quia ergo \bique idem habetur denominator 



fin. a' fin. ^* fin. r'z:(i— aflt)(i— (3(3)(i — vy), 

 tria membra pofieriora, in vnam fummam colleda, dabunt 



fcfag-f-aeV -l -^V — «33 — «>7 — ayy — g «3— aay — 33->'-4-a3>(a-«- 3 + Y) 



C'— «aJt.— 33}(i — 77) 



$. lo. Ad has formulas tradabiliores reddendas 

 ponamus breuitatis gratia: 



• a. -\- ^ -{- y — p :, a.^-^ cty -\- ^ y — q et apyr=r, 



hincque erit 



aa-H (3(3H-yY = />p— 4 ^, 

 vnde fit 



k k— 1— pp-{-2q-\-zr» 

 Deinde cum fic 



p^ — aa(3-faay-i-|3p a-f (3 py-fyya-f yy (34-3^(3 y, 

 erit 



tt a ( (3 4- y ) -+- p p (a -h y ) -H y y (a H- (3 ) =:p ^ - 3 r, 



quibus valoribus fubftitutis tcrna pofieriora membra iun- 

 eiim praebent ^-±I±^^-i^Lr±lU_ , quae fumma, a primo 

 membro — ^^iif^-^^^^^-^l- fubcratSa, rcHnquit id quod 

 quaerimus , fcilicet: 



fin S l>{,-hq^r~pt-^f <l — pr) . 



E 3 v^A 



