Make a spectrum plot for the signal of (4.10) similar to Fig. 1 showing the principal alia...

Make a spectrum plot for the signal of (4.10) similar to Fig. 1 showing the principal alias and two other alias frequencies for each cosine signal. How would your plot change if the signal was y2[n] = 2 cos(0.4πn) + cos(2.6πn)?

Figure 1

Spectrum of a discrete-time sinusoid. The principal alias components are at .