Assertion :The area bounded by y=(x−1)2, the y-axis and the line y=2 is ∫22(2−x(x−1)2)dx=103. and Reason: The curve y=x(x−1)2 is intersected by y=2 at x=2 only and for $\displaystyle 0
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect, Reason is correct
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion Solving y=x(x−1)2 and y=2 we get x=2 Hence y=x(x−1)2 intersects the line y=2 at x=2 only. Curve lies below the line y=2∀x∈(0,2) hence required area is ∫20{2−x(x−1)2}dx |2x−x44−x22+2x33|20=|4−4−2+163|=103