Barrow, Isaac, Lectiones opticae & geometricae : in quibus phaenomenon opticorum genuinae rationes investigantur, ac exponuntur: et generalia curvarum linearum symptomata declarantur

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25360 bini, eodem ordine ſibi reſpondentes, termini (puta D, Fin prima, &
P
, R in ſecunda) erit A -:
D. A -: F : : M -: P. M -: R.
11
A
. # B. # C. # D. # E. # F.
M
. # N. # O. # P. # Q. # R.
A. B. C. D. E. F.
A. M. N. O. P. Q.
Eſt enim A + N & gt; 2 M (vel & gt;) 2 B = A + C. ergò N & gt; C.
unde M + N & gt; B + C = A + D. Eſt autem A + O & gt; M +
N
.
ergò A + O & gt; A + D. Et ideò O & gt; D. ergò M + O & gt;
B
+ D = A + E.
Eſt autem A + P & gt; M + O. ergò A + P
&
gt; A + E; adeóque P & gt; E. ſimilique porrò diſcurſu quoad
velis
.
XIV. Hinc, ſi rurſus fuerint A, B, C, D, E, F {. ./. .} Arithmeticè;
& A, M, N, O, P, Q ſint {. ./. .} Geometricè; sítque ultimum F non
minus
ultimo Q;
erit B majus quàm M.
XV. Nam ſi F = Q; conſtat ex præcedente fore E & gt; P (ſcilicet u-
tramque
ſeriem invertendo) ſin F &
gt; Q: potiori jure liquet fore
E
&
gt; P.

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