i$)x[n]=cos(\frac{n}{6}+\frac{}{4})$

ii$)x[n]=e^{j\frac{3}{2}n}+e^{j\frac{5}{3}n}$

b$)$ Use Matlab to plot the real parts of the above signals to verify your analytic results. Append your code and plots in your submission. Add whitespace when necessary to enhance the readability of your code. See Google's Style Guide.