IRR ATIONALIBVS. tS% 



Euolutis autem his coefficietitibus habcbimus : 

 I + 1 X 



y{a-{-h)—a. 



i-k- ^x 



^ 1-^'^x^hxx 



etc. 



Coroll. I. 



41. Si loco X valorem |j fubftituamus , et 

 iradiones implicatas toUamus , obtinebimus formuks 

 feq^uentes : 



s 



Via'-{-b)- 



_3« +2 



Sa"-^ 



V(i» +&} = 5 T7-; —a 



54-« +4-5fl £>+ so-o 



^, s , ,. 81/4- 135 «*^4-<J3a' ^'-1-7^' 



8ifl 4-ioba*^4-3<J« ^ 4-2^ 

 etc. 



vbi autem commodam progreffionis legem definire 

 non licet. 



CorolL 2. 



42. Sufficit autem , forma vti prlori ; indc 

 enim cubus ad numerum propofitum propius acce- 

 dens colligitur , cuius radix pro a pofita nouum 



X a. dabit 



