vnde a hic ponatur {l?)=:T, erit 



(H) =(ii)^p (ii) - 9 (H) - »• (fp - etc. ^ (||). 



iicque per d x multiplicando fiet 



Hinc orietur iftud Theorema quartum: 



Si fuerit /V d x — Z, tum femper erit 



P ^ (H) = (FP -t-/^ ^^ (a-f)' /'"* 

 aa:(|i)-3a:(||) = 9.(||). 



J. 9. Sumatur iam fola quantitas r pro variabili 

 ac prodibit 



(i^)=(M-h)-^p(m-r)-^q(m-r) 



-t-'-(a^) + ^tc.-+-(|-p, 

 vnde fi ponatur (||) — T, erit 



(U) = (B)- p (H) - </ (H) ^ »■ (B) -^ «tc. -^ (||). 



Hinc igitur vt fupra patet fore 



ax(|^) = aT-4-3x(|-p, 



ficque orietur fequens Theorema quintum: 



Si fuerit fY dx~Z, tum etiam femper eri% 

 /ax(||) = (||)-^pcc(|-p,/me 



9x(|^)-ax(||):z=a.(||). 



5. 10. Haec iam ita funt manifefta, vt fuperfluum 

 foret ifta theoremata vlterius profequi. Ante autem quam 

 jrepetitas differentiationes profequamur, haec theoremata no- 



bis 



