$\quad \int_{-\pi}^{\pi}|\pi-|x|| d x$ is equal to:

JEE Main · 2020 · 03 Sep 2020 · Shift 1 · Definite Integrals

\int_{- π}^{π} ∣ π - ∣ x ∣∣ d x

is equal to:

Answer: (A)

The integrand is even, so

\int_{- π}^{π} π - ∣ x ∣ d x = 2 \int_{0}^{π} (π - x) d x

, since

π - x \geq 0

[0, π]

. Evaluating,

2 [π x - \frac{x ^{2}}{2}]_{0}^{π} = 2 (π^{2} - \frac{π ^{2}}{2}) = π^{2}

JEE Main · 2020 · 03 Sep 2020 · Shift 1 · Single correct option

The value of $\int_{- π /6}^{π /6} (\frac{π + 4 x ^{11}}{1 - s i n ( ∣ x ∣ + π /6 )}) d x$ is equal to
JEE Main 2026View solution →
$6 \int_{0}^{π} ∣ (sin 3 x + sin 2 x + sin x) ∣ d x$ is equal to.......
JEE Main 2026View solution →
Let $[\cdot]$ denote the greatest integer function and $f (x) = lim_{n \to \infty} \frac{1}{n ^{3}} \sum_{k = 1}^{n} [\frac{k ^{2}}{3 ^{x}}]$ . Then $12 \sum_{j = 1}^{\infty} f (j)$ is equal …
JEE Main 2026View solution →
If $\int_{0}^{1} 4 cot^{- 1} (1 - 2 x + 4 x^{2}) dx = a tan^{- 1} (2) - b lo g_{e} (5)$ , where $a, b \in N$ , then $(2 a + b)$ is equal to ____.
JEE Main 2026View solution →
Let $f : [1, \infty) \to R$ be a differentiable function. If $6 \int_{1}^{x} f (t) d t = 3 x f (x) + x^{3} - 4$ for all $x \geq 1$ , then the value of $f (2) - f (3)$ is
JEE Main 2026View solution →
The value of $\int_{- \frac{π}{2}}^{\frac{π}{2}} (\frac{1}{[ x ] + 4}) dx$ , where [•] denotes the greatest integer function, is
JEE Main 2026View solution →