(Solved): Given the function \( x(t)=3 \cos 100 \pi t \) : a- Find the minimum sampling rate required to avoi ...

Given the function \( x(t)=3 \cos 100 \pi t \) : a- Find the minimum sampling rate required to avoid aliasing. b- If \( f s=75 \mathrm{~Hz} \), What is the discrete-time signal after sampling? c- What is the frequency fof a sinusoidal that yields sampling identical to the one obtained in part \( b \) ?