332 E. d'ovjdiu 



{k,^Y = l^^, {Jc,^Y = l{B^-Ck), 



{heY=:-\{C-\-\AB)f^\Bp-^Q^Ah + ''^^^)l + ycm, 

 [lc,0)=^-l-^{fl + lh')l-\h{Ap-Bf)+\hm, 



Spinte di l sulle forme di /. 



{hìf=Au^-2C-\-\AB, .{l,mY=A,^^l{B'+AC\ .{hnY=B, 



{ì,Ay = n-lBl, (/,A)=./3, 



{ì,py = l{AA+Bk)~^^l\ .{ì,hY = \{Ap-Bf)^kì, 



{ì,vy = 0, .{lv) = l{A,J,-A,,m), 



{l,p.y = 0, .{l,p.) = l{A^,n-Dl), 



{lAy = It, .{l,l):=:l{Dm—A,„n), 



