Question

Q1.a ii):4-point DFT of sequence of x(n)=sin nπ/2 is *

X(K)={0,-2j,0,2j}

X(K)={0,j,0,2j}

X(K)={0,2j,0,j}

X(K)={2j,0,2j,0}

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Answer 1

Answer:

I can't understand this

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