4 21 Compute The Fourier Transform Of Each Of The Following Signals A E Ar Cos Wot U T A 0 B E 3 In 21 1 1 (33.75 KiB) Viewed 30 times
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4.21. Compute the Fourier transform of each of the following signals: (a) [e-ar cos wot]u(t), a > 0 (b) e-3 in 21 \/> 1 (d) EX-* 8(1 - KT), lal<1 (e) [te-2 sin 4t]u(t) ] (g) X(t) as shown in Figure P4.21(a) (h) x(t) as shown in Figure P4.21(b) (c) +(0) = { 0, + cos ac, s, sin TI ( [1 sin 20(-)) TI w() (0) x1) = {0.-, OK!çi G) En. e-11-21 otherwise x ( x (t) 1 v telebell ch n. 2 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 F-1 (a) (b)
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