Convert the analog voltage E(t) = 2sin4πt mV into a discrete time signal. Specifically, use sample time increments of a. 1/8 second b. 1/5 second c. 1/3 second d. 1/21 second use a data set of 128 points. Plot 4 seconds of each series as a function of time. Discuss apparent differences between the discrete representations of the analog signal.