m SIMILES PRODVCFNT. 39 



^v-h^coC.A.bv : cuius difFerentialia lequenti modo pro* 

 §redientiir. 



-^ = — ^b fin. A ,bv^ab cof! A . bv 



d^ = — ab^fm. A .bv -- ^b^of. A . bi) 



[ ^ =-4- ^b^dn. A rbv — ab\oC. A . bv 



^ rr-H ctb*Cm. A . bv-\- ^b*coC. A . bv etc. 

 Differentialia igitur tantum ordinum parium ita funt com- 

 parata , vt per s diuifa quantitatem conftantem producant. 

 Aequationi (cilicet d'''s=.-±^nsdv^'*' fatisfaciet aequatio jzn 

 «cfin.A./^^-i-Scof.A^-z; fumenda {—byziz^n. 



§. 61. Tertium genus valorum ipfius / amba priora 

 in fc compleditur, atque ideo (blum confiderari meretur,> 

 cum per id omnibus omnino cafibus fatisfieri queat. Foi*- 

 mula autem genemlis ita fe habet s zz: e^^ictCm.Abv -f- 

 l^cofA.Z?'^) differentialia \ero fequenti modo progre- 

 diuntur 



ds 



dv 



= ^s^ 5-;^^ fln. A . bv zJH^ cof A . b^\ 



dv — ^ p:^f^ Cm.A.bv ■+:ilP' coC.A . bv> 

 — zize^A^lliK^^^^^-^-h^ :p^coC.A.h4 



d*S C-hcib* _+-§/;♦ 'v 



dv" - ' )-:ill'; fm. A.bv -1%Z coHA j4 



etc. 



Ex 



