Leonhard Euler · 1748 · Internet Archive
Introductio in analysin infinitorum
All 320 leaves · leaf 337
Transcription
CONTINUIS.
307
CAP. XVIII.
$b = A;$ $\alpha = 1$
$c = B - 1;$ $\beta = A$
$d = C - 1;$ $\gamma = B$
$e = D - 1;$ $\delta = C$
$f = E - 1;$ $\epsilon = D$
&c.,
unde consequenter fiet
$x = \frac{1}{A+\frac{A}{B-1+\frac{B}{C-1+\frac{C}{D-1+\frac{D}{E-1+\&c.}}}}}$
EXEMPLUM I.
Quoniam, posito $e$ numero cujus Logarithmus est $= 1$, supra invenimus esse
$\frac{1}{e} = 1 - \frac{1}{1} + \frac{1}{1 \cdot 2} - \frac{1}{1 \cdot 2 \cdot 3} + \frac{1}{1 \cdot 2 \cdot 3 \cdot 4} - \&c.,$
feu
$1 - \frac{1}{e} = \frac{1}{1} - \frac{1}{1 \cdot 2} + \frac{1}{1 \cdot 2 \cdot 3} - \frac{1}{1 \cdot 2 \cdot 3 \cdot 4} + \&c.,$
hæc
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