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Problem # 11: Let Y(t) = (a + a X(t) cos(20 ft+), where a; are constants, 0 is uniform on (0,27], X(t) is a random process in

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so, On Unifor [0, 27] af (o)= ㅗ 27 oco<25 25 3 E (62aft to)) = Scorz*ft 70).ade 25 (sin(27ft to ZT I (sin(Zaft + 2a) Sin (zat&t. la NOW Well Compute the Covariances individually. X(t) is wosos. no E(X+2= My o cut Xtots ) = 84t-5). * tis, Yt) 60+ 2,Fc cou ( cos(25ft to), cos Rofs to ze cos (2xft+o) (05123f5 +0) ficou (20ft to 27 = 1 27 cos Loft to) (los 26 fs to do 25 ㅗ 4Sin (27 ft) Cos/27 fs) 2T sin (27 ft) los 12xts O E Sin 2 a(ftty sin(27 ft +2m) =sin(23ft) Similarly Cow [105(20 ft to), X(5X- ElxCs) e xa))+ (co/a2aft +0) *((2xf+6)/ EX)XA)) O [ € (68[left to) 0 a los (2 ofsoo) was proved earlier - Coul Ys, t) O & t

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