1. Using the same value I used in HW1.
$ e^{\frac{1}{4}j\pi*n} $
2. Also using the same value I used in HW1.
$ e^{\sqrt{3}j\pi*n} $
As we learned in class, any DT function x[n] can be written as:
$ x[n]=\sum{inf}{k=-inf}{d[n-k]} $
