a8(.) MiiMOinF. sun i.a distribution de l'electricite etc. 



tl'ou Ion lire en devcloppaiit ; 



,.— V , Z^'? 



P^'/' 



-7" (•-'/')' ('-'7') 



nJ ' 



= 9'-4-/j*<7>-f-^»7'' 



.+/•-( I -r/V*" (i-7t ' 



H-7- (l— </')' 

 ,.5 ^ fj<'' 



1-Hr (i— 7'r 



r" //'• 



«H-''~(>— 7')' 



'■' _ 7" 



(H-r)^ (i-7t 



En substituant ccs valeuis Ion tronvera 

 (J, = B,-i-R,'p' 



' „> . 



(;V = 'V',-t-7V//-l-7',>; 



a{ires avoir fait ; 



^. = -^7 



3 7' . 

 3'' "i-r;* ' 



R"= 



■~('-7*r 



fi^ = _2,,_2._l_^ 



3-/ 3-1-7' ('-77 



■'- 3 -{.-7^ 3(1-7')' ' 



7?^ = _3^^-l4._7!_^_^,.(3=57^Ziiil) 

 ' 3 1 — «* ' 3(1 — <7') 



7'(' -<-4 7'— '47') . 

 3(.-7t 



