^6S 



D E M O T V 



ct qiia hm p:Uct qiijntit:Ucin O vt ante dcfiirtum 



vnde dediicimus quatuor fequeates acquationes : 

 I. liJ^4-UNzzo 

 n lii^ -4- ^-l-B -+- ud_N -+- N^u _i_ n M — Q 



dS-^^dS~ dS ]v^* w 



IH. dun^'-^'-{-'^,^ 4- U L - o 



a s- " s ii o 



Cum nunc cx prima fit U i= "^'/g^ > ponamus 

 M — Nj ct L — N 2, \t fi.it 



UN=r:::i:^f!^i U M - =iJ. '^J? ,• et U L =: ::iJ/ tli : 



aS' aS' dS' 



quibus Yaloribus fubftitiicndis ae()uatio II. fit 



ddS 



3 N -J -v -4 - ; T d N __ j_d d N 

 iiS "" dS' 



' Vd N 



qune contr;ihitur in Ii;inc formam : 



II. 



d •< N 



'-^^2Nc/j- 



Tertia 



