-3 =.2(a.;+b.\ 

 3" -2(a3H&. 



3IV =2(«,'+fc/; 



/ =2(aj=+(»3 



3vin=2(a4^-1-64^ 

 ..■^ =2(a/+6, 

 3^ =2(a,'-^fc/ 

 3^' =2(a/H-l!.; 

 ,Mi =2(a.M-6/ 



3xiii=2(ar+64 

 3XIV =2(a3^H-63 



3XV =:2(rt3=-l-6i 



3XVI =2r«.,='+6.i 



■— 353 — 

 )ra363 [ (a/— 6/)(a.'— 6,')— .4a,a,6>, ] ^-(o3'— ft, ^)(a,a,— 6, ft,)(a.6aH-6,a, 



)ra4^ C (a,'—brXa,'—bf)—Aa,a,bib, ] ^(a^'— 6,^)(«ja,— 6,6,)(a36,-t-a,63 

 )raj64 [ (03'— 6.)=)(a,=— 6.')— 403630161] -f-(a4'—&4')(a3a.—^36,)(a,&3+a3fc. 

 )r«4^i t (»'^ — 6,')(a3^ — 6a')— 4a,a:i6i6i ] — (o4^^4')(a,0;i— 6,6»)(a.6,-t-aj6, 

 ')r«4''i t («"' — 62')(o3'— 63')— 403630:6, ]— (04'— 64')(a3a3— 636j(a263+a,6, 

 )ro464 [ (oj'—63'')(a,'— 6.")— 403630,6. ] — (04=— 64')(a3a.— 636,)(o.6j-+-aj6, 

 )l 0363 [ (o,' — 6i')(o/ — 6j^) — 40102616^ ] —(03' — 63')(o.a» — 6,62)(o.6,-+-6,aj 

 ')l 0464 [(a," — 6,-)(a3'' — 63')-f-4aj6/t,6, ] -^ (04' — 64')(o^rt,+6>,)(a,6, — a,6, 

 ')[o',64 [ («2'— 6z')(o3'— 63')-+-4a>ja:6a ] -f- (04=— 64')(a3a,4-6,6a)(oj63— 0^6, 

 )| 0164 [ («,' — 6,')(aj^ — 6j'')+4o,630ifr, ] — (04== — 64')(«30w+636,)(a,63 — O36, 

 ')! 0464 C (a^" — 6i')(aj'— 6j')+4«363aj6. ] — (04^ — 64')(a3a2H-636,)(o>j — a.6j 

 ')j 0363 [ (0/ — 62^)0,' — 6,'')-t-4a,0:i6,62 ] ■+- {ai — 6j')(OiaaH-6,62)(o,6j — 6,0^ 

 0rai64 [(0/— 6/)(a,'— 6.')-+-4oiO,6.6, ]-h (04'— 64^)(o,o,4-6.6,,)(o,fe^— .6,0,, 

 ')r«i6'i C («."— 6/)(o,=— 6,')+4rt,036,63 ] — (04= — 64')(a,a,+fc,6,)(o,6, — 6, a 

 ')ra363 [ (o/— 6,')(a." — 6,-)-+-4o,a26,fe, ] — (03'— 63')(a,a^-i-6ia,)(oi62 — 6,0 



La quarta ed ultima specie di soluzioni delta proposta no conterrii 



•2'kfk~\){k—2]{k — ^) „ . .... 



— ^ ■ = 2^=m 8 di numero, e tutte fra loro diverse. Inol- 



1.2.3.4 ' 



trc poichi; per questo caso abbiamo k — 4 = 0, cos'i niuna delle soliizioiii 



mcdesime avrii faltori comuni con la z. Da cio discende, che sebbene si de- 



lerminassero queste soluzioni medlante gli spczzamenli di z, ciascuno di due 



