- 18 - 
+ I ( 1 - e,) sc„ * , (1- -) -1- 2 y/Li;;; cos (1.2=) - (-) 
M l /l -A-e ) 
+ "i^ j (1 - (1 > 23) 4- y/ cos ^. (2^) j 
+ — ^(l-e,)sen-f,(20 
+ j (1 - ^0 sen ^. (P) + 5y/j-4:~; cos (1^ - 10 ^^^^^j- (F^ 
cos ^ _ i.1 
3!2 
2.3! 
(P., + 3y/i±^cosMP2,-3^-^(I.2,-v/;-±^^^ 
j (1 - sen ^, (P 2^) 4- 2 cos (P 2') - -"^^^ (2^) j 
+ 5,;(l-Osen^.(2^) ; 
e per -~- si trova 
P lì 
+ y-(l-e.)sen-;-,(P) 
Mi j (1 _ sen (2') + cos U "T 
