Question: optimization problem (b) Show that the Vandermonde matrix 4 73 is positive semidefinite but is not positive definite. Denote A = 73 Given an arbitrary

optimization problem

(b) Show that the Vandermonde matrix 4 73 is positive semidefinite but is not positive definite. Denote A = 73 Given an arbitrary nonzero vector y = (y1, y2, y3)

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