<J8 METH. INTEG. FORM. DJFFERENT RATION. 



qine ob cof A 4/ = f tnin^mutitur iii hirtc 



(i— 2)cor.A.«v;v-4-corA(«-i)v|y=:o feu 



cof. A. « \}/ - 2 cof.A. v|y. coC A«\|y-t- cof A (r»-i ) \]/ = o 



at cft cof A(;z-x)vi/:=cof A.\j/.cof A.«\i/-i-fui.Avi/riu.A.«vi/ 



crit C150 

 (i— cof. A . v|/) cof A. R ^]/ H- fin. A. \i/. fin ATrvi/— o ; tnit 

 concludiriir fbr6 



tjng. A . "^ -f- tang. A . » vj/ = o. 

 At ct muuni tatigCntidm cont^at cffe : 



tang. A. i; 4- ting. A ( fe TT -*: ) = o 

 dcnotante k niimcrum qucmcunquc integnim ; cx quo crlt 

 «v|/ — tTT — i, hincqiic v[/ ~ ,'„^7. Subllicucndo crg» 

 pro k fuccelliuc numeros i , 2 , 3 » +.....», oriuntut 

 fi valores pn> arcu v|/ , quonim cofunis bis fumti dabunt 

 cocfficienres a, S, y, ^S", etc. in fadoribus t -H ai" -f- 

 .V .V ; i -H S .V -h .V .V ; i -h V -V -^ .v.v ; ctc. Qiiilibct 

 irrgo faclor continctnr in liac fi)rma i -l- --v cof. A. ',_^- 

 -^xX. Q;.jare cum pro faiflorc gcncrali aflrumfcrimus 

 hnnc fi)rmam i -l-p.\H-^.v.v crit ^— i Ct p— scofA 

 ;^ atque ,-^, =:cof A . ,-— ; ; quia nunc C» cft arcus, 

 cuius cofinus ~ ^^^ crit Cj) — ^:~ ; ct hanc obrcm 

 cx fidorc I -h 2 .V cof A . -^, -\- x x onctur iotcgralis 

 «pari 

 ± .hVt cofA^^^ /(x-^-,.vcof A.;^-4-X^) 



fin * 't>f-n-'nv A » -^nn A.,„^ 





Ybi 



