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Which of the following is true regarding the number of computations requires to compute an N-point DFT? 
  • a)
    N2 complex multiplications and N(N-1) complex additions
  • b)
    N2 complex additions and N(N-1) complex multiplications
  • c)
    N2 complex multiplications and N(N+1) complex additions
  • d)
    N2 complex additions and N(N+1) complex multiplications
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Which of the following is true regarding the number of computations re...
The formula for calculating N point DFT is given as

From the formula given at every step of computing we are performing N complex multiplications and N-1 complex additions. So, in a total to perform N-point DFT we perform N2 complex multiplications and N(N-1) complex additions.
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Which of the following is true regarding the number of computations requires to compute an N-point DFT?a)N2complex multiplications and N(N-1) complex additionsb)N2complex additions and N(N-1) complex multiplicationsc)N2complex multiplications and N(N+1) complex additionsd)N2complex additions and N(N+1) complex multiplicationsCorrect answer is option 'A'. Can you explain this answer?
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Which of the following is true regarding the number of computations requires to compute an N-point DFT?a)N2complex multiplications and N(N-1) complex additionsb)N2complex additions and N(N-1) complex multiplicationsc)N2complex multiplications and N(N+1) complex additionsd)N2complex additions and N(N+1) complex multiplicationsCorrect answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Which of the following is true regarding the number of computations requires to compute an N-point DFT?a)N2complex multiplications and N(N-1) complex additionsb)N2complex additions and N(N-1) complex multiplicationsc)N2complex multiplications and N(N+1) complex additionsd)N2complex additions and N(N+1) complex multiplicationsCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is true regarding the number of computations requires to compute an N-point DFT?a)N2complex multiplications and N(N-1) complex additionsb)N2complex additions and N(N-1) complex multiplicationsc)N2complex multiplications and N(N+1) complex additionsd)N2complex additions and N(N+1) complex multiplicationsCorrect answer is option 'A'. Can you explain this answer?.
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