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Lets assume that we have performed a 20-point DFT on a sequence of real-valued time-domain samples, and we want to send our X(m) DFT results


Let’s assume that we have performed a 20-point DFT on a sequence of real-valued time-domain samples, and we want to send our X(m) DFT results to a colleague using e-mail. What is the absolute minimum number of (complex) frequency-domain sample values we will need to type in our e-mail so that our colleague has complete information regarding our DFT results?

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