Question: 2. Given f(x, y) = x3 +y' - bry + 24x. (i) Find critical points of f. [2 marks] (ii) Use the second derivative test

2. Given f(x, y) = x3 +y' - bry + 24x. (i) Find critical points of f. [2 marks] (ii) Use the second derivative test to determine whether each of the critical points is a local maximum, a local minimum or a saddle point. [5 marks]

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