dell'usodeifattorali 89 



I valori dell' x corrispondenli alla (I) sono 



3;= 1/ -8 



cos— -{■ sen~ K_i 



•r= — ;;- 



cos— +sew — K-1 



1 



/ 27: 27T^/-\ / 27r 27r,._\ ^ / Stt 2:: ^_v „/ 2tt 2;: ^_\ 



(^cos— + seJt — F-ij, - \cos— + sen t^-1 )i 2fcos— 4 5en -/.j j,-3/cos^ +sen—V.\\ 



3t: ""^/ — 



cos— +sen -V -\ 



x= 



co«— +se?ì -rV-l 

 o 5 



/ Stt 3it /_\ / St: 3?: V / 3u ^ 37t.,_\ „/ 3it 37r^._\ 



[cos— +sen-^F_|j,-^cos — + sen- V.j 1,2 ^cos — +sen—K.i j,-3f cos— + seji — /_jj 



(cos — +se?i — F-) j, - ^cos — +seji — v_i j, 2^cos — +sen -V_i j,-3f cos ^ + se7i — V.n 



a; = [/-8 



1,-1,2,-3 



Onde decomponendo l'equazione (I) in fattori di primo grado, la porremo sotto 

 la forma 



1/-8 ila; 1/_8 ] 



-+sen— K_l M cos— +sen — V.i {, 



00 / j 5 5 / + 



(TT 7r^,_\ W / 2;r 2Tr^,_\ 



cos— +se«— K-1 1,... ! \^ KOS — + se?i—F-ij,. .. 



fa;- 



cos -^ + sen ^V~\ 



1 .V . N. 1 



» ila: r 7 1/ -1 



1^- 



«0*5 +««"5-1^-1 ) cos^±sen-r.i a:-^-8 ( = 



COS— + sen -^K_ll,...j ' (cos— +sen-r- y-ij,...j[ ^t-^i^i-'^] 



