\ 



»oo> CONSTDERATJG 



Fafta iam fubftitiitione fiet : 



a^^-i a^^^—i «""-i 



etc. 

 atque cum pofito ji* — o , fiat P — x , patct cfle a zr i . 



Entergofc^-^_- ct.Y-^^-ZT^-l--^^ = ° 



(^"•-i )(«""-'- 1) I 



idcoque y =i T^^^-'JiC^ZF-~y ^'"^^^' "^^'^'^ ^'=^"1"' I 



coefEcientes , \enim tamcn non (inc ingenti laborc cnicn- 

 tur , atque tandcm iiuis concinnc cxprimi dcpichcndcntur. 



§. 21. Qiio igitur hanc cocfiicientium deteiminatio- 

 nem commodiub cxpcduim , mcthodum hic iam alitiuo- 

 tics vfurpatam adhibebo. Scilicct in ferie P— a-f-Sxv 

 -f- y v ' -h ^ .V ' H- e .V * -H ctc . loco x pono ^ , fcrieiquc 

 rclultantis fummn fit ~Q, nempc ; 



Q.— CK~\---^ il-5- _^-- ,-_^ -^ _|- CtC. 



Cum auttm fit P — ( i - .v)(i - J) i -—^ . . . . ( i -^m-J' 



«fit (ii:z(i- :- )(i-f.Xi-:-.) .... (I- ^) > i^coquc. 



H(x.- 



