4. fd (p cof. 2 <p cof. (pf = ]*| . Q . | . 



5. /d $ cof. . $ cof. V = j^ . t-f . ££ . | . 



etc. etc. 



Cum igitur invenerimus | tt C =/0 3 cof. 2 (J), fi integra- 

 lia modo inventa introducantur, ac per n dividantur, repe- 

 rietur : 



ic=i(«i4-r-ifi(4)*f-!.'H-'-B(«) 



-t-s.l^. 5- 5 . |^.(8) -4-etc. 



4 0.6 4.8 6.IO v/ 



quae concinnius hoc modo exprimi poteft: 



10 = 1(0 + ^(4)-*-^ (6) + -1-1^(8) 



+ ..V.V.V. , m ('°)- t -f te - 



quae adhuc elegantius ita referri poteit: 



|C = |.(2)-f-|. 1 ( + )-+- f. ff4 («) + &. HH(8) 

 + E- 3 ; I 9 (io)-4-etc. 



12 2 . 4 . 6 . 8 s ' 



five adhuc elegantius ita: 



*c = (*) + -; U) + H-(«) + ^ 6 4(s) 

 + ^i-( I0 ) + etc - 



J. 17. Pro fequentibus terminis ftabiliamus iftud 

 Lemma generale : 



/acpco£i<pcof.(p x f a ^~°^ — *'*-ii/acl)coU$co£<t> x - 2 » 

 \ad(p=z7ry U-H 



pro quo demonftrando ftatuamus in genere 



ya$co£iCpco£(p x ~/fin.iCj)cof.(J) x H-gco£i(t)iin.(J)co£$ x ~ I 



-hhfdQcoL i(J)co£ (J) x - 2 , 



unde 



