Q70 / 100 · BITSAT 2024 (Memory Based Paper 3) · Mathematics
The area enclosed by the curves $y=x^3$ and $y=\sqrt{x}$ is
- A$\frac{5}{3}$ sq. units
- B$\frac{5}{4}$ sq. units
- Correct answerC$\frac{5}{12}$ sq. unit
- D$\frac{12}{5}$ sq. units
Solution
Given curves are $y=x^3$ and $y=\sqrt{x}$
Both curves intersects at $x=0$ and $x=1$
Shaded region is required area
$\begin{aligned}
A & =\left|\int_0^1\left(x^3-\sqrt{x}\right) d x\right|=\left|\left[\frac{x^4}{4}-\frac{2 x^{3 / 2}}{3}\right]_0^1\right| \\
& =\left|\left[\frac{1}{4}-\frac{2}{3}\right]\right| \\
& =\frac{5}{12} \text { sq. unit }
\end{aligned}$
Shaded region is required area
$\begin{aligned}
A & =\left|\int_0^1\left(x^3-\sqrt{x}\right) d x\right|=\left|\left[\frac{x^4}{4}-\frac{2 x^{3 / 2}}{3}\right]_0^1\right| \\
& =\left|\left[\frac{1}{4}-\frac{2}{3}\right]\right| \\
& =\frac{5}{12} \text { sq. unit }
\end{aligned}$Hence, the correct answer is option: 'C'.