Compute the N-point DFT of the following finite-length sequences considered to be of length N (N is even): (a) x[n] = ( 1, n odd 0, n even
(b) x[n] = 1 2 1 − cos 2πn N
(c) x[n] = ( 1, 0 ≤ n ≤ N 2 − 1 0, N 2 ≤ n ≤ N − 1

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Solve the equation w^3 = 1,000 i honestly dont know how to punch this into a calculator pls