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Question: discrete time signal question i just need help figuring out...

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Discrete time Signal question. I just need help figuring out part C! Thank you!

Ihu ow all sleps uf yol solutions. When plotting graphs, put labe all axes. Write neatly and legibly. 1. Given the following discrete-time signals (5 points each) a. Plot ylIn] ul- -nl where uln] is the unit step sequence b. Plot y2[n]-un-1+ ul4-n] c. Find the sun+3]u[C-n] where C is a constant number. (Hint: the sum is a function of the constant c) Plot y3[n] - xI-2n-21, where xIn] is the sequence defined below. d. 0 elesewhere plot 4 #2 [n-k]x(n-2] where x1nl is the sequence defined in (d) e.
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