32 8 NOTA AGGIUNTA AGLI ELEMENTI eCC. 



^t' = 2^|a"[ir-*-2a'a"(;i][2]-H 2aV"[i][3]-»-aa'a"[l][4] 



-^a"^[2r-H2aV"[2][3]| 



'^t' = 2'|a'^[ir-t-3a'V'[ir[2]-3a'V"[in3]-*-3aV''[l][2ri 



Essendo poi 



dt ~ dt 



= m 1 5m i{t- ry-'cos i{t-^ F')'""' [co5 i{c- r)cos i{t-*- V')-sin i{t- r)smi{t-*- T)] 



= mi [f]'"~ ' cos 21 1 , 

 a\Temo successivamente 



^^' = 2^\cc"[i] cos 2t -4- a! a." ( [2] cos 2t -t- 2[l] cos 41) 



-t- a.'a."'( [3] cos 2t -t- 3[l] cos 6t) 

 -4- a'a"' ( [4] cos2t -*- 4[ I ] 005 8t) • 

 t- 2a"^ [2] C05 4£ -4- a"a"'(2[3] C05 4t -+- 3 [2] cos 6t) | 



!t^= 2^3 x\lf cos 2t-^6x'\"{[l] [2-] cos 2t^ llf cos ^t) 



-4- 3a'V"(2[l] [3]C05 2« -^ 3[l]'c05 6t) 

 -1- 3a'a"" (4[l] [2] cos 4t -^ [2]*C05 2t)| 



'^^=2^'l ^'^[1^005 2tH. a'V(3[in2]c05 2t-H2[l]^05 4f)j 



•^^ 2'-5/[irco5 2r 



dt *- -^ 



