'(■ 640 ) 
Cotiftat J0X contemplatione ipfius Trianguli Ariihmeti- 
i^ci, quam exhibuimus pa^. 63 tradatus^/rf> d'Anuljfe, &e, 
, ubi idem fufius explicatur. 
Ltmmd 4. 
'lifdem pofitis, & Symbolb eodcm mod o inter pretato 
'ac in Lem. z, Ci fit = A B z -\- C z, x z> ff 
.ut m Lem. erunt coefficiendum A, B, C, D, valo- 
res. 
I - — d I — — d — ^ 4 — 1 — fi 
.A — q r X — ^ + X 
n zn 
J~n 
n 
X 
B — —Xr-\-s 
I 
zn 
a 
— a — 4 — a n 
n 
a 
a 
X 
z n 
D 
— X — X j - 1 - ^ X 1- &€. 
n In n ' 
— X X — X t + &c. 
n zn 
Ordo coeffidentium in his valoribus eft manifeftusj 
-& demonftratur Lemma ad modum Lemmatis z. 
Cor, I. Ubi 4 — coefficientes, A^ B, C, D, d^c. pro- 
deunt per formulas fimplidores, nempc 
A=^q^r, Cz^— ^ — xi— ]f 
n zn j 
VC* 
j5 = — \ r — Si D 
n 
— X X — t 
n zn 3 » 
Cor, z. Unde ft generatorum q, r; s, f, tt, d'c* aliquot 
iint inter fe ^quales, exhibebitur X per formulam 
ftmpliciorem , evanefcentibus aliquot coe/Edemium 
A, B, C, Dy &c, ® 
Sic 
