1. The density of a rectangular plate at the point (x, y) is given by f(x, y) grams per cm², where x and y are both measured in cm. A contour diagram for f is shown to the right. 16V 6. 12 (a) Using Ax = 5 and Ay = 4, find an overestimate and an underestimate for SR f(x, y) dA. 8 (b) What does Sr f(x,y) dA represent in the context of the metal plate? Express your answer as a complete sentence that includes the correct 4 units. 3 1 5 10 15*

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