**Electrical Engineering **

Tutors I need this urgently along with MATLAB codes, if your answers are correct I'll give helpful

**Part 1**

**Part 2**

Image transcriptions

Find the discrete periodic cross correlation nypm) and Rypm) of the periodic sequences whose first period is given by ' 1,3,0,4 2,1,—2,1 { w M }

Question 1 Check whether the following systems are linear or not: (a) y(n) = n x(n) (b) y(n) = x(n) +- 2x(n - 2) (c) y(n) = 2x(n) + 4 (d) y(n) = x(n) cos on N-1 (e) y(n) = Lx(n)l (f) y(n) = N x(n - k) *=0 Question 2 Determine whether the following discrete-time signals are periodic or not. If periodic, determine the fundamental period. (a) sin (0.02an) (b) sin (5an) (c) cos An (d) sin 2an 2n n -+ cos 3 5 (e) cos cos (f) cos +0.3n (g) el(2/2)n (h) I+ eizan3 _ jaxn/7 Question 3 Determine whether the following discrete-time signals are periodic or not. If periodic, determine the fundamental period. (a) sin (0.02an) (b) sin (5an) (c) cos An (d) sin -+ cos 2n n 3 (e) cos cos "it (f) cos ~ +0.3n (g) ela/2)n (h) 1+ e /2xw3 _j4an/7

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