ce 



46 SULLO SVILUPPO DELLA FUNZIONE PERTURBATRICE 



[ p'{Sp'+Ufr+r,p+ì)-j>(4/r-\-5p+l)] D (0,0) 



\ — p{Ap'-+^^p+\)D{0,\)+p\\p'+Zp+\)Di\fi) I 

 + , -, < 



-(■2ry~r)(2p+\)D(2,0)-^(4p-'-\-3p+r)D{l,l) I 



~S{2p-l)DCÒ,0)M-^p+l)l){-2,r)-h3D{3,ì) 



F(p—ì,/>—l=4[(-ipp'—2p—2p')D{0,0)—2p'Dafi)~2pD(0,1)+DaA)]ee' 



[ -/A8//=-14p'=+57/-l j+//(4//=-r./>'+l ) ] /)(0,0) 



\-i-p'i-ip"-5p'+l)D{\,0)~hp{^p"-'ìp'-hl)D(0,ì) I 



■+- '■ ce'" 



l + {2p'-l) [2p-l)D(0,2)-^(4p''-3ry+l)D(ì,l) 



— 3C?/J-r) £1(0,3)— (2/y —!)/)( 1 ,2)+3D(l ,3) 



; [_yy(8/,'-14/)-^+5/)-l)+/>(4/)'^-5/)-|-l)]Z)(0,0) 

 \+/'(4^r-5/)+l)Z)(0,l)+/)'(4p^-3/j+l)£)(l,0) / 



l+{2p'-l) (2p-ì)Di2,0)- ~ (4p'-2p+l)D{ 1 ,1) 

 '-3(2p'-l)Z)(3,0)-(2p-l)Z)(2,l)+3y)(3,l) 



FÌP',/>+-2) = [ ■2(4/)^+9/)+4)Z)(0,0)+8(/)+l)Z>(l,0)+4Z)(2.0)]e^ 



; - y (8p*+38/)^+56/r'+31 /;+8)Z>(0,0) J 



- ^ {8p''+24p'+20p-\-S)D(ì fi)-hpD{2,())+Mp+ì )/)(3,0)+4D(4,0) ! 



, - 2/7 '■-•(4/)'^+9/)+4)2^(0,0)-8/)'-'(/*+l)£' (1 ,0)~4p"D (2,0) ) ' 

 ' + (4p'-'+9/)+4)i)(0,2)+4(/>^-l )D(Ì ,2)+-2i)(2,2) ^ 



F(ii\ji—2) = [ 2(4/y^— !)/j+4)D(0,0)— 8(/J— l)D(l,0)+4Z)(2.0)]e'' 



— -3- (8/j*—38/>'+56/5'^— 31/3+8) L>(0,0) 



le* 

 + -^-(8/3^— 24p'+20/3— 8)/)(l,0)— /)£)(2,0)— 4(/)— 1)£)(3,0)+4Z)(4,0) 



_ 2/3'X4/y^-9/J+4)Z)(0,0)+8/>'=(/J-l)Z)(l,0)-4/y^D(2,0) ) 

 . ' ' e'^e'- 



' +(4y/^-n/)+4)D(0,2)-4(/;-l)D(l,2)+2D(2,2) ^ 



e* 



