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...El digital signal processing extra problem solutions consider the following point signals n a b c d e f g h i which of these have real valued dft an imaginary do not use matlab or any computer to solve this and explicitly compute instead properties solution both purely has purly prof ivan selesnick polytechnic university matching matcheachdiscrete time with its by lling out table you should be able using exactly two cycles cosine so would expect x nonzero other coecients that gives note is really half peak at index k but integer there no coecient largest leakage also...