-== 130 -=-c= 



' $-5» Quoniam igitur omftes ifti valores funt cogni- 



ti;, fomhlae propofitae integrale quaefitum erit 



- H- A tang. p — A tang. g, 



vbi notetur effe ' • 



et 9 =z •/ (i -I- d z z + X'»). 



T 



|/ (i -f- 6 z z ~f- z"^) 



J. 6. His ergo valoribus fubftitutis noftrum inte* 

 grale erit ' 



4 4 



■/ (l -t- 6 z z -f- z"^) — Z -(- I I — )/ (l H~ 6 z z -t- z'^) 



V 



-+- A tang. : — A tang. /(i-^-dzn-z'^). 



•|/^(i-f- 6zz-i- z"^) . ^ 



Vbi notetur ambos arcus circiilares ita in vnum colligi 

 poffe, vt prodeat 



A tang LA — 1 1. 



z/(i -f-<5zz-|-2.^) 



Amba autem logarithmi ita in vnum colligi poteiunt: 



1 7 Z / (l H- 6 Z Z -h z"^) -f- Z — - l -f- i/ (l -H 6 z Z -!- z'*) 



s/ -.-^ ' ■. 



z / (i H- (5 z X -h z"^) — z -h I — / (i -+- 6 z Z -H z'^) 



$• 7- 



