— 461 — 
Or, pour x^q\, 
x 
£ fin) “ = £ fin)- 1 
fi^cc LHnJ q rn^cc 
= I] fin) + £ £ /’(»)— £ /■(»)• 2'1 
vx m =1 m=i _ < a? 
q n—m 
q n ^ Sx m =1 
(24) 
Ici, 
= I. «») f + I F ©- F ^) 
q n ^Sx LqnJ m=L V'V 
(28) 
et 
Vg ô 
^ S ^ x (æ) + S x (1/8" x) 
m=1 m= — +i 
v £ 
< 8 x (x) + S • ç- x (|/8 x) 
|/8 ' 6 
= |/8 x(æ) + x Ço(x)) 
= .»(*(*)) + o(x(x)') 
= o(x(x)) 
F (Sx) 
^ Sx (Sx) 
( 26 ) 
= x (8 æ) 
= o(x (>•)). 
