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A point is moving on y = 4 - 2x^(2). The...

A point is moving on `y = 4 - 2x^(2)`. The x-coordinate of the point is decreasint at the rate of 5 units/sec. Then the rate at which y - coordinate of the point is changing when the point is at (1,2) is

A

5 units/sec

B

10unit/sec

C

15unit/sec

D

20unit/sec

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The correct Answer is:
D
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AAKASH SERIES-RATE MEASUREMENT-PRACTICE SHEET (EXERCISE - 1) (LEVEL - 1) (STRAIGHT OBJECTIVE TYPE QUESTION)
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