3o8 



habebimus 



cm 



in\m "^ 





f (a -h bx^"^ = y 

 unde ob - =: ^ 



ideoque 



X 



in — 1 



dx 



y'm -- ' dy 



Cum porro sit 



facile intelligitur fore 



his valoribus in formula proposita rite substitutis nancjscimur 



1_ y™ — I (a — («a — |3a) y '' ay 



^ iJ (1 — 6:y")'"-'^-t-'(/— CV— iS)^")^ 



quae igitur rationalis erit, quicquid fuerit i. 



Corollarium 1. 



5. 7. Sit rz^O et a=z:l, eritque formula ad rationalita- 

 tem perducenda haec : 



(/ _+_ ^ a;^")^ f (« H- 6 ^"r 

 ipsa vero formula rationalis eiùt 



p J_ jym ~ ' (1 — ^>") >-— ^dy 



