Image text transcribed for accessibility: Create the signal x[n] = exp (j0.2nn) in the time interval [-100:100], plot it, and discuss its periodicity visually. Repeat the previous point this time for the complex exponential y[n] = exp (j0.6n). compute the product of x[n] with its conjugate and plot it. Repeat it for y[n]. Create an exponentially decreasing complex exponential, and plot it. Multiply the previous signal with the complex number z l. Discuss the resulting effect.