JEE Main20249 Apr 2024Evening ShiftMathematicsInverse Trigonometric FunctionsActual
The integral _ 1 / 4 ^ 3 / 4 (2 ⁻¹ 1-x 1+x ) d x is equal to
Options
- A1 / 2
- B-1 / 2
- C-1 / 4
- D1 / 4
Correct answer
C. -1 / 4
Step-by-step solution
aligned & I= _ 1 / 4 ^ 3 / 4 (2 ⁻¹ ( 1-x 1+x ) d x ) & _ 1 / 4 ^ 3 / 4 (2 ( ⁻¹ 1+x 1+x ) ) d x & . _ 1 / 4 ^ 3 / 4 1- ^2 ( ⁻¹ 1+x 1-x ) 1+ ^2 ( ⁻¹ 1+x 1-x . ) d x aligned aligned & = _ 1 / 4 ^ 3 / 4 1- ( 1+x 1-x ) 1+ ( 1+x 1-x ) d x= _ 1 / 4 ^ 3 / 4 -2 x 2 d x & = _ 1 / 4 ^ 3 / 4 (-x) d x=- ( x^2 2 )_ 1 / 4 ^ 3 / 4 & =- 1 2 [ 9 16 - 1 16 ] & =- 1 4 aligned