268 PONTIFICIAE ACADEMIAE SCIENTIARVM SCRIPTA VARIA - 28 
Then, from the results of § 526, we have 
20 
539-3) f= + 
(539-4) AL 
16 
(539-5) Blo) = (14 2 9 
9 3 @) 
Nr 
0 
e 
B(e) 7° 
‘539-6) Ho) Ee 
I, 3 O,u 
5397) 6. 8 ~~ g 
(Es Ie, (c+ 30 u) 
2 4 
(530-8) Re 1 
R, I-uY, 
(539-9) CRE) _ ham F 
4 
5 -0 u 
R e ° 
( -IO) I__C _1_ 
(539 R_ Tu 
I is determined by (534-1). 
11] Allais - pag. 272