4S METHODVS NOVA CALCVLVM 



cum fiiis trniisformationibiis per fe fatis cliris itx fe 

 hiibebunt : 



rf?=rf<(|i)=<;/(£^,)i rfr=</' (14)=:</' (^'sfx.U 

 <//'=^/(±If) = rf,(,lii,) 



rf. = rf/(il1 = rf/(/l^,) i </r— ^/(If-) =-. rf / ( j^.^ ) 

 d." = </((^^-) = ^/ Cj^V,'-. '''■"'='"'7r ) 



= "" (/j.V,) -^'^- 



23. Totum crgo negotiiim hiic redit , vt in 

 formula illa difrLTciuiali pro d V dxv.x loco fingulo- 

 rum differcntialium ifti valores fubftituantur , hoc 

 quc moJo prodibit variutio exprcliionis V ex iola 

 variabilitate ipfius / oriunda , fcu valor huius for- 

 mulac d t {^r^) , quoniam autcm fingula membra dc- 

 mento dl erunt affeda , co omiffo adipifcimur fe- 

 quentem formam : 



-f- Q" if ? )-j- R"(_il^ ^ 



quac ad variatloncs quarumcunque cxprcfhonum fe- 

 cundi gcncris inuciicn.ias fufhcit. 



24.. Nunc exprcffiotics tertii gencris ad^rcdi 

 poterimus formulai» incegralcs inuolu:ntcs in qubus 



potilU- 



