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The DFT of a vector [a b c d] is the vector [α β γ δ]. Consider the product
The DFT of the vector [p q r s] is a scaled version of
A
[α2 β2 γ2 δ2]
B
[α β γ δ]
C
[αβ + βδ + δγ + γα]
D
[α β γ δ]

Correct : a

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