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The area of the region bounded by parabola y2 = x and the straight line 2y = x is ______. - Mathematics

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Question

The area of the region bounded by parabola y2 = x and the straight line 2y = x is ______.

Options

  • `4/3`sq.units

  • 1 sq.units

  • `2/3`sq.units

  • `1/3`sq.units

MCQ
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Solution

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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Chapter 8: Application Of Integrals - Exercise [Page 178]

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NCERT Exemplar Mathematics [English] Class 12
Chapter 8 Application Of Integrals
Exercise | Q 29 | Page 178

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