Part II: Matlab and Signals Since digital signals are a collection of points with respect to time, Mutab is naturally suited for modeling digital signals. Observe the analog signal in figure 1. This signal can be sampled every two seconds, for example, as shown by the small circles in the figure. Electric Signal 2 1.8 1.6 14 1.2 Volts 0.6 0.4 02 0 -02 -0.4 06 0 -1 0 4 6 14 16 18 20 8 10 12 time (sec) Figure 1 a. Create a matrix named voltage Samples of the values that correspond to the voltage of the sampled points of figure 1, starting from the left. b. Do the same as in step a, but for the time values. Name this matrix time. c. Plot the voltage samples versus the time using the matrices you created in the steps aand b. Hint: Type help plot in Matlab to get information on how to plot graphs. For example, typing plot(m1m2) in Matlab will plot the m2 matrix versus the ml matrix d. Is there any difference between the original analog signal of figure 1 and the signal you created from the sampled values? How would you create another signal that better resembles the original signal? e. Would you call the signal in figure I periodic? What type of periodic waves is this signal close to