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DFT Efficient Computation on Digital Signal Processing related Questions and Answers


Question :   The computation of XR(k) for a complex valued x(n) of N points requires:
1. 2N2 evaluations of trigonometric functions
2. 4N2 real multiplications
3. 4N(N-1) real additions
4. All of the mentioned
Answer :   4 - All of the mentioned  

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