9.28 (Properties) Let x(t) = 4 sinc(4t). Find its Fourier transform X(f) and use the result to find the Fourier transforms of the following signals. (g) w(t) = r(t)cos² (2πt) (h) v(t) = x²(t)cos² (2πt)

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9.28 (Properties) Let x(t) = 4 sinc(4t). Find its Fourier transform X(f) and use the result to find
the Fourier transforms of the following signals.
(g) w(t) = r(t)cos² (2πt)
(h) v(t) = x²(t)cos² (2πt)
Transcribed Image Text:9.28 (Properties) Let x(t) = 4 sinc(4t). Find its Fourier transform X(f) and use the result to find the Fourier transforms of the following signals. (g) w(t) = r(t)cos² (2πt) (h) v(t) = x²(t)cos² (2πt)
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