.Question 5 Find and classify the critical points of the function: f(x, y) = x ty' +49xy -5 Local maximums: Local minimums: Saddle points: For each classification, enter a list of ordered pairs (x, y) where the max/min/saddle occurs. no points for a classification, enter DNE. Question Help: Video Message instructor Post to forum Submit Question MacBo esq C G Search or type U EA % W # 4 5 Q W E R T tab.Question 6 Suppose that f(x, y) = x2 - xy + y' - 3x + 3y, with domain D constrained by the lines y = I, y = 0, and x = 3. The critical point of f(x, y) restricted to the boundary of D, but not at a corner point, is at (a, b), where and b = The absolute minimum of f(x, y) is and the absolute maximum is Question Help: Message instructor Post to forum Submit Question MacBook Pro esc C G Search or type URL @ # $ & 2 3 4 5 6 Q W E R T Y tab A S D F G H caps lockQuestion 7 An open-top rectangular box is being constructed to hold a volume of 150 in'. The base of the box is made from a material costing 5 cents/in'. The front of the box must be decorated, and will cost 9 cents/in. The remainder of the sides will cost 3 cents/in. Find the dimensions that will minimize the cost of constructing this box. Front width: in. Depth: in. Height: in. Question Help: Video Message instructor D Post to forum Submit Question MacBook Pro esc C G Search or type URL @ # $ % & 2 3 4 5 6 Q W E R T Y tab A S O F G H caps lock