§. 16. Qiiod fi iam iteriim ponamus a + fS + y r*; 

 a^-^a.y-^^y~q et apy — r, tria membra priora, in 

 voam liunmam colleda, dabunt __i|Xe^— ^?^)_ ; vltimum au- 

 tem mcnibrum, fi Iioc raodo repraerenterur : 



jin. a- jin. b' Jtn. c- "* * 



aafB(3-f-aaYY-f- jSpyyzr^'^— 2^r, 

 induct hanc formam : 



7- — q q -i- 2 p r~^-pt>r—.iar-^rr 



' ^~Jin..a*jtn.b iiii.c* 



■Quare cum fit kk.— i— pp + 2.q-\-zr, omnibus mem- 

 Jbris .collexais habebimus : 



rnf S fP -'')(' — P P -+- -^ ' 7..-t:.'' ^' 1=lZ~^,TJ — 'P'" — Ppr^ r qr-t- r r 



4.UI. o Jin.a-jiu.b^Jin.c^ ' — — , 



quae formula ^uohita fit 



r C — p— q — r-htPn-^p pq~-p pr ^ qq-^rr— f» 



4.U1. o — • JTZ^-^jin.b-Jirri^- ' 



§. 17. Quia hic iterum denominator cuanefcit 

 cafibus quibus az: i, |3 — i et y~i, ncceffe eft \t iis- 

 dem cafibus etiam numerator euanefcat , ideoque iflum 

 fa<florem habeat : 



(x _a)(i-p)fl -y)— l-p_|-<7-r. 



Facla igitur hac diuifione pro numeratore nancifcemur 

 hunc <]iiotum : p — q — r -\- p p\ pro denominatore autem 

 quotus erit: 



( I -i- a) ( I H- p) ( I -h y ) = I -f-^ -f- ^ -H r, 

 ficque nadi fumus iOam cxpreflionem ; 



cof s = n±±±}=3.^ 



r . 

 r ♦ 



ao, pro hteris p^ q et r reOitutis yaloribu-s, erit 



JCia Acad. Imp. Sc. Tom. 11 P. 11. F cof. 



