(4) 



Xx*=.lx^-hlxx-hlx 

 Mult. 4 jr, 3 Jf, 2 Jf , t -v 



Mult. t jf , I r, I .V, t -v, ? .V 



^ X 5 Jf -I- i A' — t- g JT — t- — 30 "^ 



Miilt. I jr, I .V, I T, I X, i .V, I X 



'^Ex^ —lx^-hlx^-+-jiX^-h*—riXX-t-* 

 Mult. ^Jf, |x, -*.r, tr, |r. 5jr i*x 



2^.y' — ^Jf^-K^ JC*-H^.V' -+-*—! jr^-H*-t-^'s X 



Mult. |x, f .V, |jr, ^^r, ^r, |.v, |t, ^y 



Slr^r^lx^-f-^-r -h^-^x'-h* —s^v^-h* -hj-^xx-h* 

 M.ult. 9 T, ^ r 7 .V, g jf, 5 r, 4 .v, j v, 5 .v, j v, 



etc. 



§, 2. Ex his ftiitim perfpicitur, quomoda has opera- 

 tiones vlterius continuari oporteati tantum notari debet in vl- 

 timis terminis cuiusque formu.Iae exceptionem elTe ftatuendam, 

 quippc qui vbique ita determinari debet, vt pofito jrm i va- 

 lor totius exprefllonis etiam vnitati prodeat aequalis. Quoniam 

 enim omnes iftae progrcfliones ab vnitate incipiunt , manife- 

 ftum eft pofito X zz: 1 fummam ipfi termino prim.o aequalem 

 fieri debere, atque ex hoc principio vbique vltimus terminus, 

 qui femper ad potcftatcm primam jr' rcfcrtur, erit definiendus. 

 Ceterum perfpicuum eft, hunc terminum vbique fore vltimum, 

 quoniam pofiro r ~ o ipfa fumma ncccffario in nihilum abire 

 debct. Praeterea notandum eft loca vacua, vbi coLfficiens eft 

 nr o, afteriscis * effe compicta. Ita in cxpreftione vltima S x' 

 in fine acceflit terminus — joJf, quoniam pracccdente!» omrcs 



iun- 



