Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Application of Integrals

Question:

The area bounded by the curves y = \(\sqrt{x}\), 2y - x + 3 = 0, x-axis and lying in the first quadrant is : 

Options:

36

18

27/4

9

Correct Answer:

9

Explanation:

2\(\sqrt{x} = x - 3\)

Squaring both sides : 

4x = x2 - 6x + 9  ⇒ x = 1, 9

\(\int_{0}^{3} [(2y + 3) - y^2]dy\)

= \([y^2 + 3y - \frac{y^3}{3}]_{0}^{3} = 9 + 9 - 9\)

= 9