Question: USE MATLAB Exercises: Form the sequence x(n) from the first 100 samples of the D-T sequence s(n)=0.4 sin(tn/4)u(n) 1. Compute the 128-point DFT of the

USE MATLAB Exercises: Form the sequence x(n) from the first 100

USE MATLAB

Exercises: Form the sequence x(n) from the first 100 samples of the D-T sequence s(n)=0.4" sin(tn/4)u(n) 1. Compute the 128-point DFT of the sequence x(n). 2. Plot its magnitude and phase. 3. Plot the magnitude and phase of 81 frequencies in the interval

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