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

354 
DETERMINATIO ATTRACTIONIS 
Et quum integrale definitum ad dextram perinde transformare liceat, manifesto 
integrale 
5 
(cos Г 2 —sin Г 2 ) d T 
2тг\/ (mmcos Ï’ 2 -f- wwsinT 2 ) 
exprimetur per seriem infinitam citissime convergentem 
_ 2 {rrim — nn ) -f- 4 (m"m'— n"n") + 8 (m'"m—n'"ri") etc. v 
(mm— nn)[x ¡j. » 
) , 
(Calculus numericus commodissime per logarithmes perficitur, si statuimus 
\\j [mm— nn) = X, {-\J[mm — nn) = X', \\j[m'm'—nn) = X" etc. 
unde erit 
X' 
v 
XX 1 n XX л rtl X ' X” 
—;, Л = —, X = — w etc. atque 
m m m ^ 
2X'X'+4X"X"+ 8X"'X"'+ etc. 
XX — 
18. 
Per methodum hic explicatam etiam integralia indefinita (a valore variabilis 
— 0 inchoantia) maxima concinnitate assignare licet. Scilicet, si T” perinde 
per m, n, T' determinari supponitur, uti T' per m, n, T, ac perinde rursus 
T"' per m",n", T" et sic porro, etiam pro quovis valore determinato ipsius P, 
valores terminorum serie T, T', T", T" etc. ad limitem 0 citissime convergent, 
eritque 
dT 
{mm cos T 2 -(- n n sin T 2 ) 
(cos T s —sin T 2 )dT 
\J {m m cos T 2 + n n sin Г 2 ) 
Sed haec obiter hic addigitavisse sufficiat, quum ad institutum nostrum non 
sint necessaria. 
V 0 
I X'cos Гsin 2”+ 2X"cos T'sin 4X"'cos Г" sin etc. 
19. 
Quodsi iam statuimus m — \J[G-\- G'), n = \J[G-{- G"), valores quanti 
tatum P, Q facile ad transscendentes p, v reducentur. Quum enim P, Q sint 
valores integralium
	        
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