Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section A

Chapter

Applications of Derivatives

Question:

Find the area of the region bounded by the two parabolas $y=x^2 $ and $y^2=x$ :

Options:

$\frac{1}{2}$

$\frac{1}{3}$

$\frac{2}{3}$

$\frac{5}{3}$

Correct Answer:

$\frac{1}{3}$

Explanation:

The correct answer is Option (2) → $\frac{1}{3}$

$y=x^2 $ and $y^2=x$

they both intersect at $x^4=x$

$⇒x=0,1$

Required area = $\int\limits_0^1\sqrt{x}-x^2dx$

$=\left[\frac{2}{3}x^{5/2}-\frac{x^3}{3}\right]_0^1=\frac{2}{3}-\frac{1}{3}=\frac{1}{3}$