Question: (3) [10 points] Determine for which values of the parameter a, the function f($, y) = $4 + am3y + y2 + :32 has positive-denite

(3) [10 points] Determine for which values of the parameter a, the function f($, y) = $4 + am3y + y2 + :32 has positive-denite Hessian. What can be said about convexity of f in this case

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