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An arch y = 4x - x² rises from the axis and returns to it. Area beneath the arch?
A16/3
B64/3
C8
D32/3
Answer & Solution
Correct answer: D. 32/3
The curve meets the axis at x = 0 and x = 4, and the integral of (4x - x²) is 32 - 64/3 = 32/3.
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