Show that the n x n cosine transform matrix c is orthogonal

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Show that the real and imaginary parts of the unitary DFf matrix are not orthogonal matrices in general.

Show that the N x N cosine transform matrix C is orthogonal. Verify your proof for the case N = 4.

Show that the N x N sine transform is orthogonal and is the eigen matrix of Q given by (5.102). Verify your proof for the case N = 3.

Reference no: EM131324205

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