Di.i. iM'.or. c.nsi'O iii.m.vmiis 2.')3 



S()/iici()iir. Si llil la iclla () /' (he aljliia siilla O l> la slcs^i iiK II- 



iia/.ioiic ( lie la \ } (Ict^ a\('rc siilla Zll. e bia OF -OH: la 



/u 



1' () si pi-dliiDi^lii ,sic(li(; (W>— O/'; si laccla i),l(}^F.I(\ c >ia 



yll 



r__ {OJ -+- O /■•) { <) A — O I'} -(--(„!; -2 — I ) <) \ 



, (1)1 ccnii I / / 1(1 



il raf^j^Io ('i^iiaic atl . //' si laccia 1' iiil( r.si'/.ioiic /, la ciTcala corda ./ \ ) 

 tlinicy.zcra I aiitiolo Oil . 



l*i\()iil,l.M\ Xlll. Costruin: itti Iriaiis^o/t) (In- .s'ui Ui^iicilr (id iino dalo 

 ed abh'ni i icrlici sii tic re lie dale. 



(Jaso I ." Lr n'llc datr /(tniiliio if liiiiiiiiolo A li (> ( ^'v^. li i . ) 



4'J. Sla \ } Z il ccrcnlo Iriani^olo ; essentia csso ((inosi iiilo di ;;raii- 

 (Ic/./a <■ (li ionna saraniio dale lo Imij^liczzc A Z^ ti. \ ) - b v I an;^olii 

 } \ /v=r«- dicasl .(■ I iiu liiia/.ioiie ij^iiola del lalo \ i sicclu"' 



\ } zc^b' . -I Z^as' . 1 due Uian^oli ./_V Z IS } \ r'\ daniio 



!(' rf|iii[i(tllcn/,(' idcnticlic / V+ I Z-h Z^J €1:0. \ I't-^ IS J -^ } \ ^o: 

 osscrviaiiio die .l\ <■ una ])or/.i()iie imiola dclla I IS. sicclie 

 ,J\ zC^p.yllS, essciido p nil rapporlo iiicoj^nilo. lie xiune \/j=:^(i — p) I IS: 

 jioniaiiH) c'/.iandio IS) ^ /j. IS C, Zl—r.CI cd aMcmo lo due etinipol- 



inr/.c (i) />..HS-^a/ '^''-hr.C.l^o. (2) {i -p) . I IS ^<j. ISC-b ," -^u 

 (■(illc ([Mali (lohhiaiiio dclcniiinarc Ir (|iiallr() Incd^nilc .1 [> <j r. A lal 

 nnpo scrvono Ic (■([ni|)ol|iii/.(; {onjuj^ale drilc iircccdcnli. line Ic (il) 



p.i-]yns-^(ir''~"''^ri]<: i^^ (^) (i- /y)(j //;-4-r;.(i/>v:-/.=~'--(): 



racilmenle ,si eliiiiina r dalli' (1) ('.\). e (/ dalle (j) ( J^), lie risnlla 



(.')) p{ I IS. ej cj - cj - / /;. L\i ) + //. . j C.I. ?""^ ' - (I. CI. .~ "~ ■"•" . 

 ((■)) (i-p){ I IS. cj IS c- (j . / /;. ./; c ) - b. rj is c. , ' ^ b. is C~ ' - n : 



per eliniiiiare p osservereiiio ilie i sikii ((uliicienli in (piCNli' (.)) (0) 

 sono e(|iiipolk'iili. ^iatelie ISC-Sz — C.J — ./ IS. i j ISC .:^ ~ t j (LI — cj . I IS. 



