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| The length x of a rectangle is increasing at the rate of 2 cm/minute and the width y is decreasing at the rate of 2cm/minute. When x =10cm and y = 10 cm, find the rates of change of the area of the rectangle |
40 cm2/min -40 cm2/min 0 cm2/min none of these |
| 0 cm2/min |
| dA/dt = -2x+2y |
