1.70 r>E TAVTOCRRONlt. 



quae fponte Tariabilium fepanitionem ofFeit, cum prodeat: 

 ds , ludu 



n J 



e^ —i \ — 7nu~{^nuu 



tiim vcro ob <^if=:^ et v=:.{e ^ —i)u fjmul pro temi»- 

 jore ^ detcrminando obtincbimus 



j f , ? d II 



** * i X— 7/1 U ^ (i U U •— ^" 



Hic primum obferuo formulae -^^ — , quLi huic eflf; 



e^—i 



-n s 



e ' ds - "" M 



aequalis - — ^^^ iategrala eflc =:^/(i— ^. » ^ 



I.- ^ » 



quocirca crit 



■* \K i-e ^ =/>r=r^h^rnr;: •=\H'K-7nU'\-nu up 



■ "1 /- <^ " , r Lf^5 



"T"' a 7 X — 7nu-+,7iuu ^^ * — "" y X — ■ m u -♦- n u u» - 



21". Qiiod nnnc ad tautochronit;mnm attinet, quia 

 pofito j— o, ficri debet v—^, dcnotante b celerita— 

 tem corporis in iplo piiuiflo A , pro hoc loco fiet 

 «— a~c\j; dcinde , quia in pundo F celcritas <y eua- 

 ncfcit, fit ibi u — o-^ vnde pro tempore primnm pcr 



arcum A M indcfinite inueniendo formulae —f\-^^j^ 

 integrale itii capi debet,. vt euancfcat, pofito « — «vi, quo 

 fac^o totum tcmpus pcr arcum AF refuitabit , fi po* 

 iiiuur arrro^ his autem operationibus manifertum eft, 

 m^que quantiiatera b, neque quaotititem arcus AF ::::<?, 



