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MHT CET 2023 Mathematics question

MathematicsApplication of DerivativesMHT CET 2023

Let and . The point A is moving on the line at the rate of 2 units/second. The area of is increasing at the rate of

Answer: (A)

Solution

Let . Area . So (taking the area increasing, i.e. ). A moves along at 2 units/s, so

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Question ID VK-098388