Sample Final Exam
ECE 438
Fall 2016
Instructor: Prof. Mireille Boutin
All questions below are derived from the homework of Prof. Mireille Boutin, all rights reserved by Prof. Mireille Boutin.
1. Compute and Sketch the graph of the DTFT of $ x_d[n] = cos(2*(\pi)*250 * (1/400) ) $
2. If x(t) is $ (1/8)*sinc((t-15)/7) $
find $ (\chi)(f) and plot abs((\chi)(f)) $
