Leonhard Euler · 1748 · Internet Archive
Introductio in analysin infinitorum
All 320 leaves · leaf 86
Transcription
58 DE EXPLICATIONE FUNCTIONUM
LIB. I. Scribatur pro hac Serie ista forma generalis :
$1+Az+Bz^2+Cz^3+...+Lz^{n-2}+Mz^{n-1}+Nz^n + \&c.$
atque quilibet coëfficiens ex duobus antecedentibus ita definie-
tur ut fit $N = \frac{m-n}{n} \alpha M + \frac{2m-n}{n} \mathfrak{C} L$, unde omnes
termini ex primo, qui est 1, definiri poterunt. Erit nempe
$A = \frac{m}{1} \alpha;$
$B = \frac{(m-2)}{2} \alpha A + \frac{(2m-2)}{2} \mathfrak{C}$
$C = \frac{(m-3)}{3} \alpha B + \frac{(2m-3)}{3} \mathfrak{C} A$
$D = \frac{(m-4)}{4} \alpha C + \frac{(2m-4)}{4} \mathfrak{C} B$
$\&c.$
75. Si fuerit $Z = az + \beta z^2 + \gamma z^3$, erit $(1 + az + \beta z^2 + \gamma z^3)^{m-1} = 1 + \frac{(m-1)}{1} (az+\beta z^2+\
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