Question: Plot the spectrum for the following signals: (a) f(t) = cos(10t) (b) f(t) = cos (10t) (c) f(t) = cos3(10t) %3D (d) Suppose we

Plot the spectrum for the following signals: (a) f(t) = cos(10t) (b) f(t) = cos (10t) (c) f(t) = cos3(10t) %3D (d) Suppose we pass the signal cos (10t) through an ideal lowpass filter with cutoff frequency 20rad/sec. COS What is the resulting signal?

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