Target Exam

CUET

Subject

Section B1

Chapter

Definite Integration

Question:

$\int\limits_{-\frac{5}{2}}^{\frac{5}{2}}|x|dx$ is equal to

Options:

$\frac{25}{4}$

0

$\frac{5}{2}$

$-\frac{5}{2}$

Correct Answer:

$\frac{25}{4}$

Explanation:

The correct answer is Option (1) → $\frac{25}{4}$

$\int_{-5/2}^{5/2}|x|\,dx$

$|x|$ is an even function

$=2\int_{0}^{5/2}x\,dx$

$=2\left[\frac{x^2}{2}\right]_{0}^{5/2}$

$=2\cdot\frac{25}{8}$

$=\frac{25}{4}$

The value of the integral is $\frac{25}{4}$.