Question: Let K > 0. Prove that a quadratic function p(x) - xTKx - 2xTf without constant term has non-positive minimum value: p(x') 0. When

Let K > 0. Prove that a quadratic function p(x) - xTKx - 2xTf without constant term has non-positive minimum value: p(x') ≤ 0. When is the minimum value equal to zero?

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