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The area of the region (in sq units), in...

The area of the region (in sq units), in the first quadrant, bounded by the parabola `y = 9x^(2)` and the lines x = 0, y = 1 and y = 4, is

A

`(7)/(9)`

B

`(14)/(3)`

C

`(7)/(3)`

D

`(14)/(9)`

Text Solution

Verified by Experts

The correct Answer is:
D

Area `=int_(1)^(4)xdy=int_(1)^(4)(sqrt(y))/(3)dy=(1)/(3)[(y^(3//2))/(3//2)]_(1)^(4)`
`=(2)/(9)(4^(3//2)-1^(3//2))=(2)/(9)xx7=(14)/(9)`
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