ffcrenti- 



c 49 :) 



/ Cdg ^ Dz . r Ed s 



r^H^- — ( ..* 4. .^* - -t "V (^a 4. ^»y . »• -D 



ando fit ;»^^»y. '(^TTf 



Si multiplicamus per (z^ +^^)"' atque di vidimus per dz^ 



eric 



C = D (2;* + ^0 - ^ ^ C« ~ ^* + ^ C^' + ^0 



Ex quibus aequationibus inveniuntur 



•^ — (2«— 'Sj^'* (_2W— 2J<2^ O 



-1 '—2 / 7-; , .-». ' x ] + confl. Eodcra niodo 



eric: 



/ dg .^ I g 



(22 + ^2/-* (2« — 4;^^ ' (22+^2)""^ 



fit: ^ 



(2«— 2')( 2«--4>* ' (2.24-^2)*- » (a«-3) (a»-^4}^* 

 y^CTH h^V'V **" ^^"^' ^^^ denuo: 



/ 



