25 ) o ( ^jft 



9i 



8z pro A F, F E, AE eorum proportionales I , s, t) 

 tf zr 2 s -f- BE: per (uperiora vero (it tf =z 2 s+q,, 

 eritBEizq; Poteftautem q, quum ponatur binariol 

 non major, femper aptari in circulo,cujus radius efl i, 



3uare ex adverfo, fi arcus , cujus complementi chor- 

 a eft q, dividatur in n partes aequales , erit f-ehor- 

 da complementi unius hanim partium ; vel quod eo- 

 dem recidit, fi arcus cujus cofinus eft dividatur 

 in n partes aequales , erit i£ cofinus unius harum 

 partium. Jam d^q cofinus arcus femicircumfe- 

 rentia minoris A , qui videlicet fit quadrante minor 

 ii quantitas refblvenda fuerit i — ^ " -f- s major 

 verofi qz"* -\^z''*, erit eadcm ~ q cofinus arcu- 

 um A-{- C, A-f-2 C, A+ 3 C , &c. ubi C denotat 

 integram circumferentiam. Quare cofinus arcuum 



A A-f-C A+2C A+3C , 



— y — I — y — ! j — ——J &c , quorum numerus 



n n n n 



eft n , erunt totidem valores ipfius ^f^ quorum itt- 

 que dupla pro f fcripta in formula i — f z + toti* 

 dem dant fa£tores quantitates i — qz" +z"'. 



Intervallo OP ~ i defcripta circumferentia 



circuli, duftaque 

 diametro POP 

 abfcindatur OR 

 zii q , idque a 

 centro Overfiis 

 P Q quantitas re- 

 fblvenda fuerit 

 I — q z" +z^'*, 

 ut verfiis P fi 

 i + qz« +z^»& 

 erigatur Rr nor- 

 malisadPp&cir- 

 cumfere .:i,i; oc- 

 currens in r, Di- 

 vi- 



