Write a matlab function [x]=dft(x, n) that calculates the dft of a length-n sequence x[n]. you should save your matlab script in a file called dft. m. if x[n] = [1, 2, 3, 4, 5], use the dft(x, n) function to find x[k], for 0 ≤ n ≤ 4. use the scheme you come up in prob. 9.6, write a simple matlab script to recover x[n] from x[k] using dft(x, n)

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