84 
+A.Tg 
jM-2n+2 
«... + A.Tg 
((uæ igitur ambæ valent, dum u niimerice <1 est, et rea- 
libiis quibuscumque (salvâ conditione supra commemorata, si 
forte fuerit numerus int. aut o) . — 
Per se patet, si in his ponerentur successive v=o et iiz=:o^ 
4 
recuperaturos nos fore æquationes illas (ILA.b) et (II. B.b) una 
cum (20) . — 
Aliam bis tandem æquat. (II. D) et (22) reddi licet formam 
/i-2n+ 
notatu vere dignam, posito :5=:ArcTgi« ideoque '\/ ^ 
V Cosz 
nempe : 
Cos (u r — loff Cos’ z') 
('ll c-rz Ë L 
V)-. v'[ ' +(;■]■][ ' i-f,)’} ■{ ' 
nn 
V 
•Cos — +A.Tg— +A.Tg + 
\ 2 
(i-l 
. .+A.Tg 
iM-n+, 
