For the following function: f(t) = 5+2 cos(2πt - 90) + 3cos4πt Let us sample the signal f (t) at 4 times per second (f = 4 Hz) for (t = 0 →³). The value of discrete samples are given by: f(k) = 5 + 2 cos(k − 90) + 3cosnk

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