IGa' 



40 SULLO SVILUPPO DELLA FUNZIONE PERTURBATRICE 



4-F(/)'+2, p~2)cos[{p'+2)n't-\-{p—2)nt-h(p'+2y-\-{p—2)s—2lv'+2w+I] 

 +F{p'—2, p+2)cos[{p'-2)n't+(p+2)nt+{p'—2)s'+{p-\-2}s-\-2w'—2w+I] 

 +F{p'-2, p—2)co^[{p'—2)n't+{p—2)ntMp'-2y+{p—2)s+2iv'+2w+I] 

 +F(/y+l, ;j+3)cns[(/)'-Hl)/iY+(/J+3)«<+(/j'+l)j'+(/)+H)s— l(j'— 3((>+/] 

 +F(p'+\, /)— 3) co?.[{p'+\)n'tMp-'i)nt-\-{p'+'^ )&'Mp~'à)i—w'+'òw+I] 

 +F{p'—l, p+'à)cos[{p'—\)ii't+{p+-A)nt+{p'—\y+{p^ò)i^io'—Òìv+I] 

 +Fip'-1, /;-3)cos[(p'--l)/«7+(/J-3)«/;+(//-l)£'+(/)-3)c+?<»'+3w+/] 

 +F{p\ p+4) . cos[p'n't+(p+i)n(+p'B'+{p+4)z—iic+l] 

 +F{p', p-'i) . cos[p'n't-\-{p—i)iìt-hp's'+{p—4:)t+4w+I] 

 +F{p'+5, p) . cos[{p'+X))n't+pnt+(p'+^)i'+p^—^io'+I] 

 +F{p'—ò, p) . cos[(/V— 5j/iY+/)/?^+(7y— 5)£'+/3£+5ro'+/] 



-f-F(/y+4, 7:1+1) cos[(//4-4) «7+(/)+l) /;<+(/j'-M)£'+(/54-l)H—4io'—?r+/] 

 +F{p'+-Ì, p—l)coii[{p'+i)ii't+{p—l)iU+{p'+i)s'+Ìp—l)-c—iw'+w-\-I] 

 -^.F(p'—4, ;j+l)co.s[(/y— 4)«7+(/J+l)/;^+(7J'— 4)£'+(/)+l)5+4to'— iO+J] 

 +F(/3'— 4, p—l)co>^[(p'—4:)n't+[p—l)iil+Ìp'—AyJ+{p—l)s+iw'+w+I] 

 +Fip'-h3, /3+2)cos[(/y+3)/iY+(/)+2)/;(;+(/y+3)H'+(/)+2)£-3?c'-2fC+/] 

 +F{p'+B, p—2)cos[Ìp'-h3)n't+{p—2)tit-\-Ìp'+-B)s'+{p—2)B—dw'+2io+I] 

 4-F(/y— 3, /)+2)C0S[(i!)'— 3)rt7+(;5+2)«^+(/)'-3)£'+(/)+2)£+3(o'-2to+/] 

 4.F(p'_3, ;j_2)cos[(/)'— 3)nY+(/j-2)«.^+(//— 3)£'+(p— 2)£+3(o'+2jo+/] 

 +i?(yy+o^ /)+3)cos[(7y+2)/«Y+(/J+3)«^+(/3'+2)£'+(/)+3)E— 2it)'-3it)+/] 

 +;7(p'+2, /)— 3)cos[(/3'+2)n7+(p— 3)/;/+(/)'+2)£'+(/>— 3)s— 2u5'+3(0+J] 

 +F(p'— 2, /J+3)C0S[(i3'-2)«'^+(p+3)/?^+(/j'— 2)£'+(/5+3)e+2(0'— 3fo+/] 

 _l_jP(p'_2, /j_3)cos[(/y-2)«7+(/3-3)/ì<+(/y-2)H'+(/5-3)E4-2(o'+3fO+/] 



