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| Suppose the length x of a rectangle increase and width y decrease with the same speed simultaneously. Then with what speed with respect to time does the area of the rectangle change? |
The rate of change in area is 0 cm2/min for any values of x and y. The rate of change in area is 0 cm2/min for x= 10 cm and y = 10 cm only. The rate of change in area is 0 cm2/min for x= 100 cm and y = 100 cm only. None of the above |
| None of the above |
| The rate of change in area is 0 cm2/min for all values of x and y provided x=y |
