FLVIDORVM LINEARI. 259 



tigp:=: zgib- z^ — sT'' :t-^ Ait: 



Tbi eft r : / r: y 11: ^ , ideoque T' : t zz %^ : eft 



enim dilkntia A M — f» et celeritas y fiindio tem- 

 poris ; tantum. Transferamus nunc primo pundum 

 z in M, vbi cum prellio fit data zz M ob s~fn 

 habcbijnus : 



^ g K zz 2 g {h — M \y.) - mT^ : t -^ A \ t 



deinde transferamus pundum z in orificium O po- 

 nendo x — fl, ^bi cum prcflio pariter fit cognita 

 zz. k erit 



2gkzz 2g'b — (ji^-aT^it-^ A:r. 



Ex his aequationibus coUigimus primo 



2g{M-k)z:^ 2g(Oa)-MfJL)H-(d!-7«)r^:l 

 ideoque T^ : t zi: ^ ^ ^ ~ 2g(M — fe-t-Mm—ou)) 



tum vero cum= fit 



2^(M-;))z=2^(5;-M|jL)-H(j'-w^r^:f erit 



M— -/JZZS— M|JL-4- (^— •^)(^ — fe-+-M,a — Ooj) 

 ' • c — m 



leU 1) HZ M(a — <) - t-b(s — ■?n).4-M)j(.fa — s.)-f.Oa ) (s — m) __ ^ 



•* a - — m 



Vel ^ Z=: (^-^•MM.)(a-— O-*-(K-^-0aj)(s — m) __ ^ 



« a -— m "^ 



vel ecvam 6 zz og(M-hMM.)->-M2;(fe-HOa)) ' _ ^^ 



•* M O 



Totum ergo negotium ab illa aequatione difreren- 

 tiQ diffcrentiali pendet. 



Co roH- I. 



4(). Si preflio in M fuerit vel conftans vel a 

 fpatio A Mizz^m pendens , quoniam altitudo M [ju 



Kk a ab 



