Question: Let f(x, y) -a+y + 2r+ 4y be given. Which of the following statements is correct? f has one local minimum and two saddle

Let f(x, y) -a+y + 2r+ 4y be given. Which of the

Let f(x, y) -a+y + 2r+ 4y be given. Which of the following statements is correct? f has one local minimum and two saddle points. f has no local extreme value. f has two local minimum and one saddle point. f has one saddle point and two local maximum points. f has local maximum value at (0,-1) and minimum value at (0, 1).

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