: An ideal D-to-C converter produces an output signal whose ω frequency content is the same as the input signal's discrete-time frequency content over the range -π< ω ≤ π. However the continuous-time tequency axis (ω) is a scaled version of ω. For each of the discrete-time signals y[n] below: determine the continuous-time output signal y(t) from an ideal D-to-C converter whose sampling rate is fs = 3600 Hz.
a. y[n] = 8 cos(0.6π n- π/3)
b. y[n] = 4 COS(1.2 πn - π/4)
c. y[n] = 2 cos(2.4π/n - π/5)