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प्रश्न
The area of the region bounded by parabola y2 = x and the straight line 2y = x is ______.
पर्याय
`4/3`sq.units
1 sq.units
`2/3`sq.units
`1/3`sq.units
उत्तर
The area of the region bounded by parabola y2 = x and the straight line 2y = x is `4/3`sq.units.
Explanation:
Given equation of parabola is y2 = x ......(i)
And equation of straight line is 2y = x ......(ii)
Solving equation (i) and (ii)
We get `(x/2)^2` = x
⇒ `x^2/4` = x
⇒ x2 = 4x
⇒ x(x – 4) = 0
∴ x = 0, 4
Required area = `int_0^4 sqrt(x) "d"x - int_0^4 x/2 "d"x`
= `2/3 [x^(3/2)]_0^4 - 1/2 * 1/2 [x^2]_0^4`
= `2/3 [(4)^(3/2) - 0] - 1/4 [(4)^2 - 0]`
= `2/3 xx 8 - 1/4 xx 16`
= `16/3 - 4`
= `4/3` sq.units
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