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GATE Electronics and Communications (EC) 2016 Shift 2 Solved Paper

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Question : 43

Total: 65

The Discrete Fourier Transform (DFT) of the 4-point sequence
x[n]={x[0],x[1],x[2],x[3]}={3,2,3,4} is
X[k]={X[0],X[1],X[2],X[3]}={12,2j,0,−2j}.
If X1[k] is the DFT of the 12-point sequence x1[n]={3,0,0,2,0,0,3,0,0,4,0,0}, the value of |‌

| is ________

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