Full text: [Allgemeine Analysis] Theoria combinationis observationum erroribus minimis obnoxiae (3. Band)

B38 
DETERMINATIO ATTRACTIONIS 
ubi signorum ambiguorum superiora referuntur ad casum s = -j-1, inferiora ad 
casum g = —1. Attamen tractatio analytica ad maximam partem elegantius 
sine usu horum angulorum absolvitur. Ceterum haud difficile foret, significatio 
nem geometricam tum horum angulorum, tum reliquarum quantitatum auxilia 
rium in hac disquisitione occurrentium assignare; hanc vero interpretationem ad 
institutum nostrum haud necessariam lectori perito explicandam linquimus. 
4. 
81 iam in expressione distantiae p pro cos .E et sin E valores supra assumti 
substituuntur, illa in hanc formam transibit: 
y/(G + G'cos T* + G"sin T 8 + 2 gcos Tsin T + 2 H'sin T + 2 II" cos T) 
P Y + Y' c °s T + y" sin T 
ubi coefficientes a, a', a etc. ita determinabimus, ut salvis sex aequationibus 
conditionalibus 
— a a — ~\~11 
— a a —Y 
11 -¿>11 -f>11 i 11 11 
— a a —o o +T T 
— a a'— I)' t)"-j- y Y 
— a a —t)"t) -f- y"y 
— a a — fi fi' + 7 7 
adeoque etiam reliquis inde demanantibus, fiat 
o, H'= o, H"=o 
quo pacto problema generaliter loquendo erit determinatum. Quodsi itaque de- 
nominatorem ipsius p per t denotamus, transire debet functio trium quantita 
tum t, i cos E, i sin .E haec 
{AA-\-BB-\-CC) 11 -f- a a [t cos E) 2 -\-bb{t sin E) 2 — 2 a At. i cos E— 2 hBt. i sin E 
per substitutionem 
t cos E — a -f- a cos T-f- a sin T 
t sin E = fi -j-ö'cos sin T 
t — 7 ~\~ 7'cos T-\~Y' s in ^ 
= 1 ' 
= 0 
= 0 
y
	        
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