930 e. JOKio 



si ha: 



U =^ Uo + [- h - ^ oi + [h - h\ 0, + 



r{- [- h - h + ih - 1) d,_, - ih -1) ^7-5] V, -f 



+ [+ k, - ih - 1) ch_,] r, + [A-, + (A-, - 1) d,_,] e, + 



+ [-A-,-[-(A-5-l)f/o-sh'8+^ 



+ [— A-1 + A:2 — A-5 f^io_., — (A's'— 1) (/c,_8] r<, -j- 



4- [ — ^3— Ml3-12]'"l2+ [^1+^3 + ^•5(^^13-12— <^13-ll)]i'l3 + 



-^l—h — ih — 1) c?i5_i4] ''14 -f 



4- L - h + /^■4 + (A-. - 1) rfi5-u + A', rh,_,,] V,, + 



i I A'3 A'i5 ai,5_x5| l'i,; . 



L'error medio M„ sarà dato da 



MJ = m^ \- k, - k.^^ 4- [A-i - A:,]2 + [.^3 - A-4]^ + [k, + A-4]^ + 



+ [(A-5 - 1) d,., - (A-5 - 1) (^7-5 - h - A-4Ì- + 



• + [- (A-5 - 1) d,_, + A:,J2 + [k, + (A-., - 1) d,_,f + 

 + [- A-2 + (A-5 - 1) d,_,]^ + 

 + [- A-, t- A^2 + A-5 rf,o-o - (A-5 - 1) r/,_s]^ + 

 -f [K + A-5 ^xo-o]^ + [- A-1 + A-5 ^^13-11]^' + 

 + [-A-3-A'5^^i3-i2]- + [A-i+A^3+A-5(rfi3-i2-^i3-n)?4- 

 + [-A-,-(A-5-l)r/i5-u? + 



+ [- A-, + (A-5 - 1) r/i5-i4 + A-4 -f A-5 r/i«_i5]2 -f 

 + [A^s —A-5 ^^C-15P 



ove sia m 



_l/[tT 



r^ 



Le quantità indeterminate A-j A'2 k^ k^ A-5 si determinano in modo 

 che J/ir sia minimo e quindi le sue cinque derivate rispetto ad 

 esse siano nulle. 



Equazioni di trasporto. 



^^^^ = — 4A-1 — 2A-2 + -*A-o, + A-5 l/^io-;, + rf.,_8 + c?io-<j — 



— ^^3-11 ^ '^3-12 — '^13-n| — «^11-8 = 0. 



— 2d,_, - r/io_.1 + ^^6-5 — 2</7-5 + 2^/,_, = . 

 -^ = + 2A-1 + 4A-3 + A-5 [2r/i3_i2 - ^/l3-n - ^15-141 - 



— <^15-U = . 



