1. Suppose that MATLAB is used to plot a sinusoidal signal. The following MATLAB code generates the signal and makes the plot. Derive a formula for the signal; then without running the program, draw a...

1. Suppose that MATLAB is used to plot a sinusoidal signal. The following MATLAB code generates the signal and makes the plot. Derive a formula for the signal; then without running the program, draw a sketch of the plot that will be done by MATLAB.

2. For the sinusoidal waveform shown in Fig. P-2.9, determine the complex phasor representation

X = A e jϕ

by finding values of the parameters ω 0 , ϕ, and A such that the waveform is represented by

x(t) = {X e jω 0 t }