Ques. 1JEE Main 2024, 29 January (Morning Shift)
x 2 ( 1 (x- 2 )2 x3 ( 2 )3 (t 13 )dt ) is equal to
- 3 24
- 3 28
- 3 4
- 3 8
Answer
(2) 3 28
Solution
Form 00 ⇒ L'Hôpital's rule, with Leibnitz rule: ddx x3( /2)3 (t 13 )dt=- x 3x2
L= x 2 -3x2 x2 (x- 2 )
∵ x=- (x- 2 )
L= x 2 3x22 (x- 2 )x- 2= 32 24 1= 3 28
Answer: (2)