4- 
. \ lin. |[(n4-iv)+("+^i) — (n+Vi)] > fi n. j[?'ii4^iv)~Cn+ii^4.(n+^^ 
Col^liii+i; ^ - -~~"~lTn. Oi+ii) . fin. Cn + vi; 
i»f Ci)f (n+i) = 2cor.-|(n+i)v §. 19, d^, mm efter QSqyat« //Z §. 39 
fin.(n-f-ii) . fin.(n+vi) -f- cor.(n--|-ii) . cor.(n-j-vi) ~ cof.(n+iv) 
I cof. (n+i; = ^ fin. (n + n) . li^oT+Ti") ' ' 
. cof. [(n+ii'l —-(n-^-vi)] --cof. (ii+iv) ^ . 
dtfaa acol.-Kn+i) = fiii.(n + n),fiD.(n+7iy" ' - 
følndig^ t^a cof. b — cof. a 2 fin. Ka-{-b) . fin |(a — b), 19, /, faa et 
fin ^[("+^0 + C — ("+^0] ♦ fin^r(n-f IV-) — (n+n) --[^(nJpVi)] 
47* 
fin.J[0 
fin.iCO 
cof. jCfn -j- 1 v) (n -|-vi"i] 
-tang.i[(n+.) + ("+"OJ = 
|yiffet fan 6et)tfe5 fa<i[et)ci;: - - 
i) ctt abbcte oc^ fu^'-fva^cve lin,(n4~i)/ foranbre6 Q£q\Jatiofieit 
fi.,(„+xu) = filiill±^g+!i>, §. 39. //., til &e ,0 fergenSe ^ 
^) {in.(ii4-i) ~-lin.(n+ni) — ^^^^^ , 'C3, 
^ fiii,(n + i). fin,(n»f iy) + fin.(n + i).fin.rn4-vi) 
I) fio. (n+i) + iln. (n+iii) — —lu^J^vy— ^ — 
Qif'JSqy. /. §* 39 ubfommcr, ^eb at fc^tte n^-n ifleben for n, QSq^aticnm 
, . cof.(n-|-iv),cof.(n-|-v)' fin. fn-|-iv) * cof, (ii-^-vi) 
. 9]ant benueø geb muliiplicn'e^ nieb 8cbene i Qgq'^ationea. 
r / X \ fin. (n 4- O ♦^"•(" + vi) « #t 
^, , . cof(n4-iv)»fin(n-j-vi).fin(n4-i).coi(o4''^) . cofCn-fvQ* ^»Ci^+'X 
mm 
