hi)- 



PAH JEAN PLANA ii) 



§"' = .", R,"-H 30 «:'-H6o flj"H- 30 /i,"-t- lu/{," : 



/</' = v. \ \.-+- v v \.-h \ \, r s -»- \; \, \.-t- \. \. r.; 

 r s » = \, 2 v, v r v.-h x;x,x s x,-i-\;x, a.v.-j- v; \, \ \ 



/,'." = z't'+xf'xf+xtx'+xtxf-rxjx* . 



6" = 5 8,"' -h 20 fl,'" -+- 6o B3'" ■+- 3o /.*/"-»- 1 B ,'" 

 RJ" = A , A ,< -+- V, .^"-t- _Y 3 A/- -1- V, V-,' -+- r s A , 1 : 

 RJ» = V / A 2 A ', -t- A? V, A\ -+- XJX, X, -+- AT, 3 Jf, X 5 -+- \ , \ , *, ; 



^ «,'» = x; x s a , a- 5 +x;x.x>x s -i-x 3 'x, \\ x n -+- x; \ , a\ x, 



-4- \ s X , Al 3 A\ ; 



j*,/" = a . ay ay-4- x, x;x s >+ x 3 x;x?+ x :< x; x s % + x 5 x; x; ■. 



I ty" = A? AY -+- X.* AT 5 3 -+- AT/ AT, 3 -+- X,* A? ■+■ A? A7 



C'est avec les vingl ibnctions R , R 5 ; R/ R$ j R." "5 i 



/{,'" /? s "', que Ton doil former le second membre des equations [i-l] 



du § precedent. 



