52 SULLO SVILUPPO DELLA FUNZIONE PERTURBATRICE 



g (4/;=+9/J+4) (8/y-^-14/y^+5/y-l)D(0,0) 



+ 



-l{4p'-hdp+4:) Hjr--3p'-hì)D{0,l)- i (2/)-l) (4/>-^+9/3+4)Z)(0,2) 

 ~ÌP+l)(ip"-Sp'-hl)Dil,l)-h\(Sp"-14p"+5p'-ì)D{2,0} 

 -(2/7'-l)(p+l)Z)(l,2)-f- |(4/)^+9p+4)i)(0,3)- ^(4/)"-3//+l)£'(2,l)| 

 -3(/)+])I>(l,3)-i(2/V-l)Z)(2,2)+|£>(2,3) 



6 



1 



6 



(2//— 1) (8/)*+387;^+5G/)'+31i3+8)£)(0,0) 



(8iJ'+38j9'+5G/3'+31/)+8)I»(0,l) 



(27J '-1 ) (4/>=+l 2p^+l 0/9+4) Z)(l ,0) 



>e*e' 



- i (4/>^+12j5=+10/J+4)D(l,l)-|-/3(2/j'-l)Z)(2,0)+i/)Z)(2,l) 

 -2(2p'-lj(/)+l)D(3,0)-2(2/)'-l)Z)(4,0)+2(/j+l)£l(3,l)+2£)(4,l) 



i^(?y-i,p-2) 



f - (2p'-ì) (4/^'-9p+4)Z)(0,0)+4(2/)'-l) (/)-l)£»(l ,0) 



( +(4p'^_9/;+4)i)(0,l)-2(2/y-l)2)(2,0)-4(p-l)i5(l,l)+2i)(2,l) \ 



e'e' 



+ : 



1 (4p'!_n/)+4) (8p"— 14p"+5/)'— 1^D(0,0) 

 o 



, -l{p-l){Sp"-Up"+5p'-l)D{l,0) 



. 1 (4/)'-9/)-H) (4/)"-3p'+l)/)(0,l)- 1 (2/)'-l)(4p=-9/>+4)Z)(0,2) 

 j+ I-CP-I) (4/>"-3/)'+l)i)(l,l)+ j(8/)'=-14io"+5/)'-l)Z)(2,0) 



-(2p'-l ) (p-l)Z)(l ,2) + 1 (4p'-9/)+4)D(0,3)- -J- (4/)"' -3/)'+l)£>(2,l) 



,eV'^ 



l-3(p-l)D(l,3)- k2p'-l)D(2,2)+ |(2,3) 



