Question: Suppose that V is an open set in Rn that a V, and that f: V R is C2 on V. If f(a)

Suppose that V is an open set in Rn that a ∈ V, and that f: V → R is C2 on V. If f(a) is a local minimum of f', prove that D(2)f(a; h) > 0 for all h ∈ Rn.

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