a:4 1:2 + 2 2 Suppose that the Hessian of a function f : f(w, y) is given by the matrix Hf : 2 1 . The function f has a single critical point. Which one of the following statements is true? Select one alternative 0 The critical point of f is a relative minimum. 0 The critical point of f is a relative maximum. 0 The critical point of f is a saddle point. 0 We have not been given enough information to classify the critical point of f