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Integrals · Question 24

JEE Main 2026 (Online) 23rd January Morning ShiftMCQEasy📈 Topic in 71% papers+4−1
1

The value of the integral 24 5 24 dx1 + [3] 2x is :

  1. 3
  2. 18
  3. 6
  4. 12

Answer

(4) 12

Solution

I = /245 /24 dx1 + [3] 2x

Use ab f(x) dx = ab f(a + b - x) dx with a + b = 4:

2 ( 4 - x ) = 2x

I = /245 /24 dx1 + [3] 2x = /245 /24 [3] 2x [3] 2x + 1 dx

Adding: 2I = /245 /24 1 dx = 5 24 - 24 = 6

I = 12

Answer: (4)

JEE Main 2026 (Online) 23rd January Morning Shift

Keep practising — Integrals

2

Let I(x) = 3 dx(4x + 6) ( 4x2 + 8x + 3 ) and I(0) = 34 + 20. If I ( 12 ) = a 2b + c, where a, b, c N, (a, b) = 1, then a + b + c is equal to :

  1. 30
  2. 29
  3. 28
  4. 31
JEE Main 2026 (Online) 23rd January Evening Shift
3

The number of elements in the set S = \x : x [0, 100] and 0x t2 (x - t) dt = x2 \ is

JEE Main 2026 (Online) 23rd January Evening Shift
4

The value of - 2 2 ( 1[x] + 4 ) dx, where [ ] denotes the greatest integer function, is

  1. 160(21 - 1)
  2. 160( - 7)
  3. 760( - 3)
  4. 760(3 - 1)
JEE Main 2026 (Online) 22nd January Morning Shift
5

If ( x) -112( x) -52 dx = - p1q1( x) 92 - p2q2( x) 52 - p3q3( x) 12 + p4q4( x) -32 + C, where pi and qi are positive integers with (pi, qi) = 1 for i = 1, 2, 3, 4 and C is the constant of integration, then 15p1p2p3p4q1q2q3q4 is equal to

JEE Main 2026 (Online) 22nd January Morning Shift
6

Let [.] be the greatest integer function. If = 064 (x1/3 - [x1/3] )dx, then 1 0 ( 2 6 + 6 )d is equal to .

JEE Main 2026 (Online) 22nd January Evening Shift
7

The value of - /6 /6 ( + 4x111 - (|x| + /6) )dx is equal to:

  1. 8
  2. 4
  3. 2
  4. 6
JEE Main 2026 (Online) 21st January Morning Shift
8

6 0 |( 3x + 2x + x)| dx is equal to .

JEE Main 2026 (Online) 21st January Morning Shift
9

Let [ ] denote the greatest integer function and f(x) = n 1n3 k=1n [ k23x ]. Then 12 j=1 f(j) is equal to .

JEE Main 2026 (Online) 21st January Evening Shift
10

If 01 4 -1 (1 - 2x + 4x2 )dx = a -1(2) - b e(5), where a, b N, then (2a + b) is equal to .

JEE Main 2026 (Online) 21st January Evening Shift
11

The integral -1 32 ( | 2 x ( x) | )dx is equal to:

  1. 2 + 3
  2. 4 +
  3. 1 + 3
  4. 3 + 2
JEE Main 2025 (Online) 8th April Evening Shift

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