Question: Let S = {0, 1, 2, 3}. (a) Find the sample vectors corresponding to the functions 1, cos x, cos 2x, cos 3x. (b) Is

Let S = {0, 1, 2, 3}. 

(a) Find the sample vectors corresponding to the functions 1, cos πx, cos 2πx, cos 3πx. 

(b) Is a function uniquely determined by its sample values?

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