Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section A

Chapter

Application of Integrals

Question:

Find the area bounded by the curves y = x2 and $y=\frac{2}{1+x^2}$.

Options:

$π$

$π-\frac{1}{3}$

$π-\frac{2}{3}$

$π-\frac{1}{4}$

Correct Answer:

$π-\frac{2}{3}$

Explanation:

Shaded Area = $2\int\limits_0^A(\frac{2}{1+x^2}-x^2)dx$

Solve $y=\frac{2}{1+x^2}$ and y = x2, A ≡ (1,1)

⇒ Shaded Area = $2\int\limits_0^1(\frac{2}{1+x^2}-x^2)dx=π-\frac{2}{3}$